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điểm M có thể nằm ở bất cứ đâu trên đoạn thẳng AB nên mk chọn câu d
điểm M hoặc trùng vs điểm A hoặc nằm giữa A và B hoặc trùng vs điểm B
theo mk thì như thế
chúc bn hok tốt nhé :)
a: Vì OA<OB
nên điểmA nằm giữa O và B
mà OA=1/2OB
nên A là trung điểm của OB
b: BI=AB/2=3cm
=>OI=9cm
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Điểm M có thể nằm bất kì ở đâu trên đoạn thẳng AB nên mình chọn câu d )
d ) Điểm M hoặc trùng với điểm A hoặc nằm giữa A và B hoặc trùng với điểm B
Theo mình chứ không chắc chắn , bạn nhé !
Chúc bạn học tốt !