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Mathematics, 25.07.2021 03:10 trinityanne1738

Cho tam giác ABC có AC= 5cm, BC=7cm a Gọi H là hình chiếu của A lên BC và HC=4cm. Tính AH
b Gọi k là hình chiếu của H lên AC. Tính chu vi của tứ giác ABHK

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Cho tam giác ABC có AC= 5cm, BC=7cm a Gọi H là hình chiếu của A lên BC và HC=4cm. Tính AH
b G...
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