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noicomnau4509
2 năm trước
Cho tâm giác ABC vuông ở A có BC= 10 cm, AC=8cm và tam giác A’B’C’ vuông tại A’ có B’C’=5cm A’C’=4cm a) chứng minh tam giác ABC đồng dạng tâm giác A’B’C’ b) tính tỉ số chu vi của tâm giác ABC và tâm giác A’B’C’
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