Mathematics, 09.08.2021 20:40 lackin2056

Cho hình vuông abcd tâm o a) tìm ảnh của điểm C qua phép quay tâm a góc 90 độ
b) tìm ảnh của đoạn thẳng BC qua phép quay tâm O góc 90 độ

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Cho hình vuông abcd tâm o a) tìm ảnh của điểm C qua phép quay tâm a góc 90 độ
b) tìm ảnh của...