适合条件∠A=∠B=2∠C的△ABC是 ( )
A.锐角三角形 | B.直角三角形 | C.钝角三角形 | D.不能确定 |
更新时间:2019-02-03 06:18:01
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【知识点】 三角形内角和定理的应用解读
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