Mathematics, 24.08.2021 05:20 moosaw500
Cho tam giác ABC cân tại A, có góc A nhọn. Vẽ tia phân giác của góc BAC cắt BC tại K.
a, Chứng minh tam giác ABK = tam giác ACK
b, Vẽ trung tuyến BM của tam giác ABC cắt AK tại G. Chứng minh G là trọng tâm của tam giác.
c, Cho AB= 19cm, BC= 12cm, tính đọ dài đoạn AG.
Answers: 2
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Cho tam giác ABC cân tại A, có góc A nhọn. Vẽ tia phân giác của góc BAC cắt BC tại K.
a, Chứng min...
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