Mn làm được câu nào thì làm nha , không phải làm hết đâu😅
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QL
21 tháng 8 2021
O1=O2( vì 2 góc đối đỉnh)
O3 và O4 thì làm theo cách hai góc kề bù
Vd :O1+O3=180 độ (2 góc kề bù)
Suy ra :120 độ +O3=180 độ
Vậy từ đó tính ra đc O3 ,tương tự O4 cũng vậy
MP
7 tháng 11 2016
Ba Be is a freshwater lake in Bac Kan province, Vietnam. It is one of the one hundred largest freshwater lake in the world [citation needed] and is located in Ba Be National Park, where it was recognized as a national tourist zones of Vietnam. The lake was formed over 200 million years ago. The continental tectonic Late Camri Southeast Asia, has brought a huge body of water with a surface area of approximately 5 million m2 and a thickness of more than 30m up halfway karst, created Ba. Connecting three branches of the lake is called Pe Lam, Pe Lu and Pe Leng. The maximum value of Ba Be Lake is a unique geological landscape, the outstanding value of geological landforms and great value for biodiversity. This is a natural freshwater lake in Vietnam. In 1995, Ba Be Lake Conference is the world's fresh water, held in the United States, recognized as one of the 20 special freshwater lakes of the world need to be protected. In late 2004, Ba Be National Park is recognized as ASEAN Heritage Park. Dated 09.27.2012, the Prime Minister signed the "Decision " ratings Scenic Lake Ba Be National Monument particular 
k cho mk
VT
18 tháng 2 2017
Tra Co - the beach was named "the most lyrical Vietnam" - a beauty on full, harmonious and idyllic white sand beach stretches smooth calm blue ocean waters in the four seasons. Here, you will find moments of peace, dreaming and daydreaming spoiled yourself in the sun, in the wind ...
Located in the far northeast of the country, where the border between Vietnam and China, in the city of Mong Cai in Quang Ninh, Tra Co is the outer edge of an alluvial island naturally by the action of waves and currents generated coastal St. Seaside is from 3-4m high sand dunes, with the village and the village residents crowded, mainly living by aquaculture and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Beauty here unlike what we have seen in Ha Long, Do Son beach or the other, by a sand lane smooth blue sea air brought in the shadow of the central coast but has shed its mountains North sea brought the shadow. The mingling of the waters that give Tra a peaceful mountain river beauty, lyricism and should tho.Voi wide and flat beach, fine white sand in the background harmony blue ocean waters throughout the four seasons, Tea Stock is the outer edge of an alluvial island naturally by the action of waves and coastal lines formed.
Tra Co is located in the extreme northeast of the country around Ninh province, adjacent to the Chinese border, the town of Mong Cai and Mong Cai border gate 8-9 km. By canoe or ship runs from Hai Phong to Mong Cai with 206 km distance from Hong Gai or 132 km journey, you will come to this beach. If you take the road from Hanoi, the road 18, Hanoi - Hon Gai then turn the road to Tien Yen Mong Cai No. 4 went to Tra Co beach.
Seaside sand dunes high as 3 to 4 meters, with hamlets and villages crowded inhabitants, living mainly on farming and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Tra Co coast to 17 km long from nose to nose Heels Jade north to the south, enough to hold tens of thousands of tourists to the resort, the beach. Because away from the cities, industrial parks, ports, should Tra Co has a cool climate, sea flavor passionate, quiet space with bold and wild also. The annual average temperature is 22.7 degrees Celsius, has 4 months to 20 degrees C temperature (in December to March next year), the hottest month is still the ideal temperature at 28 degrees Celsius from 26 to . In this place, never saw the presence of "commercial beach", very few shops, hawker. If you want to enjoy fresh seafood, can be purchased right on the beach at the fishing boats of fishermen.
If your holiday right at the end of May Lunar, you will be involved "Tra Village Festival" takes place from 30/5 to 6/6. The six-day festival is celebrated featuring the lives of fishermen.Tra Co - the beach was named "the most lyrical Vietnam" - a beauty on full, harmonious and idyllic white sand beach stretches smooth calm blue ocean waters in the four seasons. Here, you will find moments of peace, dreaming and daydreaming spoiled yourself in the sun, in the wind ...
Located in the far northeast of the country, where the border between Vietnam and China, in the city of Mong Cai in Quang Ninh, Tra Co is the outer edge of an alluvial island naturally by the action of waves and currents generated coastal St. Seaside is from 3-4m high sand dunes, with the village and the village residents crowded, mainly living by aquaculture and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Beauty here unlike what we have seen in Ha Long, Do Son beach or the other, by a sand lane smooth blue sea air brought in the shadow of the central coast but has shed its mountains North sea brought the shadow. The mingling of the waters that give Tra a peaceful mountain river beauty, lyricism and should tho.Voi wide and flat beach, fine white sand in the background harmony blue ocean waters throughout the four seasons, Tea Stock is the outer edge of an alluvial island naturally by the action of waves and coastal lines formed.
Tra Co is located in the extreme northeast of the country around Ninh province, adjacent to the Chinese border, the town of Mong Cai and Mong Cai border gate 8-9 km. By canoe or ship runs from Hai Phong to Mong Cai with 206 km distance from Hong Gai or 132 km journey, you will come to this beach. If you take the road from Hanoi, the road 18, Hanoi - Hon Gai then turn the road to Tien Yen Mong Cai No. 4 went to Tra Co beach.
Seaside sand dunes high as 3 to 4 meters, with hamlets and villages crowded inhabitants, living mainly on farming and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Tra Co coast to 17 km long from nose to nose Heels Jade north to the south, enough to hold tens of thousands of tourists to the resort, the beach. Because away from the cities, industrial parks, ports, should Tra Co has a cool climate, sea flavor passionate, quiet space with bold and wild also. The annual average temperature is 22.7 degrees Celsius, has 4 months to 20 degrees C temperature (in December to March next year), the hottest month is still the ideal temperature at 28 degrees Celsius from 26 to . In this place, never saw the presence of "commercial beach", very few shops, hawker. If you want to enjoy fresh seafood, can be purchased right on the beach at the fishing boats of fishermen.
If your holiday right at the end of May Lunar, you will be involved "Tra Village Festival" takes place from 30/5 to 6/6. The six-day festival is celebrated featuring the lives of fishermen.Tra Co - the beach was named "the most lyrical Vietnam" - a beauty on full, harmonious and idyllic white sand beach stretches smooth calm blue ocean waters in the four seasons. Here, you will find moments of peace, dreaming and daydreaming spoiled yourself in the sun, in the wind ...
Located in the far northeast of the country, where the border between Vietnam and China, in the city of Mong Cai in Quang Ninh, Tra Co is the outer edge of an alluvial island naturally by the action of waves and currents generated coastal St. Seaside is from 3-4m high sand dunes, with the village and the village residents crowded, mainly living by aquaculture and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Beauty here unlike what we have seen in Ha Long, Do Son beach or the other, by a sand lane smooth blue sea air brought in the shadow of the central coast but has shed its mountains North sea brought the shadow. The mingling of the waters that give Tra a peaceful mountain river beauty, lyricism and should tho.Voi wide and flat beach, fine white sand in the background harmony blue ocean waters throughout the four seasons, Tea Stock is the outer edge of an alluvial island naturally by the action of waves and coastal lines formed.
Tra Co is located in the extreme northeast of the country around Ninh province, adjacent to the Chinese border, the town of Mong Cai and Mong Cai border gate 8-9 km. By canoe or ship runs from Hai Phong to Mong Cai with 206 km distance from Hong Gai or 132 km journey, you will come to this beach. If you take the road from Hanoi, the road 18, Hanoi - Hon Gai then turn the road to Tien Yen Mong Cai No. 4 went to Tra Co beach.
Seaside sand dunes high as 3 to 4 meters, with hamlets and villages crowded inhabitants, living mainly on farming and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Tra Co coast to 17 km long from nose to nose Heels Jade north to the south, enough to hold tens of thousands of tourists to the resort, the beach. Because away from the cities, industrial parks, ports, should Tra Co has a cool climate, sea flavor passionate, quiet space with bold and wild also. The annual average temperature is 22.7 degrees Celsius, has 4 months to 20 degrees C temperature (in December to March next year), the hottest month is still the ideal temperature at 28 degrees Celsius from 26 to . In this place, never saw the presence of "commercial beach", very few shops, hawker. If you want to enjoy fresh seafood, can be purchased right on the beach at the fishing boats of fishermen.
If your holiday right at the end of May Lunar, you will be involved "Tra Village Festival" takes place from 30/5 to 6/6. The six-day festival is celebrated featuring the lives of fishermen.Tra Co - the beach was named "the most lyrical Vietnam" - a beauty on full, harmonious and idyllic white sand beach stretches smooth calm blue ocean waters in the four seasons. Here, you will find moments of peace, dreaming and daydreaming spoiled yourself in the sun, in the wind ...
Located in the far northeast of the country, where the border between Vietnam and China, in the city of Mong Cai in Quang Ninh, Tra Co is the outer edge of an alluvial island naturally by the action of waves and currents generated coastal St. Seaside is from 3-4m high sand dunes, with the village and the village residents crowded, mainly living by aquaculture and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Beauty here unlike what we have seen in Ha Long, Do Son beach or the other, by a sand lane smooth blue sea air brought in the shadow of the central coast but has shed its mountains North sea brought the shadow. The mingling of the waters that give Tra a peaceful mountain river beauty, lyricism and should tho.Voi wide and flat beach, fine white sand in the background harmony blue ocean waters throughout the four seasons, Tea Stock is the outer edge of an alluvial island naturally by the action of waves and coastal lines formed.
Tra Co is located in the extreme northeast of the country around Ninh province, adjacent to the Chinese border, the town of Mong Cai and Mong Cai border gate 8-9 km. By canoe or ship runs from Hai Phong to Mong Cai with 206 km distance from Hong Gai or 132 km journey, you will come to this beach. If you take the road from Hanoi, the road 18, Hanoi - Hon Gai then turn the road to Tien Yen Mong Cai No. 4 went to Tra Co beach.
Seaside sand dunes high as 3 to 4 meters, with hamlets and villages crowded inhabitants, living mainly on farming and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Tra Co coast to 17 km long from nose to nose Heels Jade north to the south, enough to hold tens of thousands of tourists to the resort, the beach. Because away from the cities, industrial parks, ports, should Tra Co has a cool climate, sea flavor passionate, quiet space with bold and wild also. The annual average temperature is 22.7 degrees Celsius, has 4 months to 20 degrees C temperature (in December to March next year), the hottest month is still the ideal temperature at 28 degrees Celsius from 26 to . In this place, never saw the presence of "commercial beach", very few shops, hawker. If you want to enjoy fresh seafood, can be purchased right on the beach at the fishing boats of fishermen.
If your holiday right at the end of May Lunar, you will be involved "Tra Village Festival" takes place from 30/5 to 6/6. The six-day festival is celebrated featuring the lives of fishermen.Tra Co - the beach was named "the most lyrical Vietnam" - a beauty on full, harmonious and idyllic white sand beach stretches smooth calm blue ocean waters in the four seasons. Here, you will find moments of peace, dreaming and daydreaming spoiled yourself in the sun, in the wind ...
Located in the far northeast of the country, where the border between Vietnam and China, in the city of Mong Cai in Quang Ninh, Tra Co is the outer edge of an alluvial island naturally by the action of waves and currents generated coastal St. Seaside is from 3-4m high sand dunes, with the village and the village residents crowded, mainly living by aquaculture and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Beauty here unlike what we have seen in Ha Long, Do Son beach or the other, by a sand lane smooth blue sea air brought in the shadow of the central coast but has shed its mountains North sea brought the shadow. The mingling of the waters that give Tra a peaceful mountain river beauty, lyricism and should tho.Voi wide and flat beach, fine white sand in the background harmony blue ocean waters throughout the four seasons, Tea Stock is the outer edge of an alluvial island naturally by the action of waves and coastal lines formed.
Tra Co is located in the extreme northeast of the country around Ninh province, adjacent to the Chinese border, the town of Mong Cai and Mong Cai border gate 8-9 km. By canoe or ship runs from Hai Phong to Mong Cai with 206 km distance from Hong Gai or 132 km journey, you will come to this beach. If you take the road from Hanoi, the road 18, Hanoi - Hon Gai then turn the road to Tien Yen Mong Cai No. 4 went to Tra Co beach.
Seaside sand dunes high as 3 to 4 meters, with hamlets and villages crowded inhabitants, living mainly on farming and fishing. Close to the coast is the casuarina forest strips windbreaks, shade keep sand and nearby there are ecosystems of mangroves.
Tra Co coast to 17 km long from nose to nose Heels Jade north to the south, enough to hold tens of thousands of tourists to the resort, the beach. Because away from the cities, industrial parks, ports, should Tra Co has a cool climate, sea flavor passionate, quiet space with bold and wild also. The annual average temperature is 22.7 degrees Celsius, has 4 months to 20 degrees C temperature (in December to March next year), the hottest month is still the ideal temperature at 28 degrees Celsius from 26 to . In this place, never saw the presence of "commercial beach", very few shops, hawker. If you want to enjoy fresh seafood, can be purchased right on the beach at the fishing boats of fishermen.
If your holiday right at the end of May Lunar, you will be involved "Tra Village Festival" takes place from 30/5 to 6/6. The six-day festival is celebrated featuring the lives of fishermen.
BD
28 tháng 3 2016
Thường thì một năm có bốn mùa, đó là quy luật tự nhiên mà chắc chắn sẽ không ai có thể thay đổi được. Mỗi mùa dều có đặc diểm riêng biệt không giống nhau như: mùa xuân mát mẻ muôn hoa khoe sắc thắm. Mùa hè là mùa của nhửng bông hoa phượng vĩ, bằng lăng- mùa học sinh tạm biệt mái trường. Mùa thu dưới ánh trăng huyền ảo chúng em có thể rước đèn họp bạn. Nhưng có lẽ mùa đông là đặc biệt nhất vì cái lạnh buốt, gió bấc và mưa phùn. Bây giờ đang là mùa đông và là ngày lạnh nhất trong năm.
Nằm cuộn tròn trong chiếc chăn bông ấm áp mà em không muốn giậy vì lẽ trời quá lạnh, từ trong phòng có thể nghe thấy tiêng gió rít từng cơn. Ra khỏi phòng sương mù giày đặc, bầu trời âm u. Lác đác vài chiếc lá vàng đang rơi xuống cùng với những hạt mưa tinh nghịch. Cây cối khẳng khiu trơ trọi như đang cố gắng chống lại sức mạnh của thiên nhiên. Ngoài đường loáng thoáng vài bóng người trong những bộ quần áo bông ấm áp và khoác ngoài là chiếc áo mưa. Hôm nay học sinh ở các trường cũng đã được nghỉ học. Cảnh ao hồ trầm mặc hơi nước bốc lên tạo cảm giác lạnh lẽo, nước buốt cắt da, cắt thịt. giờ đay nơi duy nhất em nghĩ đến đó là nhà bếp, ánh lửa bập bùng gợi nên vẻ ấm áp. Lúc ngày cả nhà đang ngồi trò truyện, còn mẹ đang tất bật chuẩn bị bữa sáng cho gia đình. Đã quá trưa mà mặt trời vẫn không ló mặt. Dến sáu giờ tối thì ánh sáng nhường lại cho màn đêm yên tĩnh, chỉ có mùa đông mới có hiện tượng ngày ngắn đêm dài như vậy. Bàu trời lúc này âm u, ít sao và nhiều sương mù hơn ban sáng. Mưa phùn lất phấn tạt qua. Ánh đèn đã tắt hẳn bầu không khí trở nên tĩnh mịch hơn, chỉ còn tiếng chó sủa từ xa vang vọng lại.
Em rất thích mùa đông vì có thể ngôi bên ánh lửa bập bùng. Được nhìn cảnh vật như khác lạ. Mọi người bảo mùa đông năm nay lạnh hơn mọi năm nhưng được sông trong ngôi nhà ấm áp tình yêu thương thì em có thẻ nói mùa đông không lạnh.
28 tháng 3 2016
sách giải cũng có cơ mà
không tra trên mạng thì tra sách giải
sách giải nhiều bài văn hay
sao bạn không lấy không đọc không xem
a: =3(x-y)(x+y)
\(a,=3\left(x-y\right)\left(x+y\right)\\ b,=2x\left(x^2-25\right)=2x\left(x-5\right)\left(x+5\right)\\ c,=5x\left(x^2-2x+1\right)=5x\left(x-1\right)^2\\ d,=\left(x-y\right)\left(x+y\right)+2\left(x-y\right)=\left(x-y\right)\left(x+y+2\right)\\ e,=x\left(y-3\right)+y\left(y-3\right)=\left(y-3\right)\left(x+y\right)\\ f,=\left(x+2\right)^2-16y^2=\left(x-4y+2\right)\left(x+4y+2\right)\)