题目内容
如图,在△ABC中,AB=AC,∠A=36°,AB的垂直平分线交AC点E,垂足为点D,连接BE,则∠EBC的度数为 °.
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36°.
试题分析:根据等腰三角形两底角相等求出∠ABC,再根据线段垂直平分线上的点到线段两端点的距离相等可得AE=BE,然后求出∠ABE,最后根据∠EBC=∠ABC-∠ABE代入数据进行计算即可得解.
∵AB=AC,∠A=36°,
∴∠ABC=
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∵DE是AB的垂直平分线,
∴AE=BE,
∴∠ABE=∠A=36°,
∴∠EBC=∠ABC-∠ABE=72°-36°=36°.
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