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2023-09-03 13:00:57
Ta có:
- BM = MN = NC = 2 cm.
- BD = BC/2 = 3 cm.
- CE = BC/2 = 3 cm.
Do đó, I là trung điểm của BD và K là trung điểm của CE.
Ta có:
- IK = ID/2 = 1,5 cm.
Vậy IK = 1,5 cm.