如图在三角形ABC中,AD垂直BC于D,AE平分∠BAC,(∠C>∠B),试说明∠EAD=1⼀2(∠C-∠B)

2025-06-27 01:56:02
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回答1:

∠EAD = ∠BAD-∠BAE = (90°-∠B)-½∠A = (90°-∠B)-½(180°-∠B-∠C) = ½(∠C-∠B)