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Nhật Minh
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2022-09-14 16:37:56
2022-05-08 18:38:46
À lộn =601dm2
2022-05-08 18:37:36
=61dm2
2022-05-08 18:36:01
A) Những tia trùng nhau là : AC và AD ; BC và BD ; AB và AD
B) Không tia nào đối nhau