Mathematics, 24.03.2022 04:20 jerseygirl1783
Cho tam giác ABC, AB=12cm, AC= 15cm. Phân giác AD của góc BAC.
a) Tính BD, DC ( sử dụng tính chất tia phân giác )
b) Chứng minh tam giác DBA ∞ tam giác ABC
c) Chứng minh tam giác ADC cân tại D.
Answers: 3
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Cho tam giác ABC, AB=12cm, AC= 15cm. Phân giác AD của góc BAC.
a) Tính BD, DC ( sử dụng tính chất...
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