Question

如图,在△ABC中,AB=AC,∠BAC=36°,分别以AB、AC为边做两个等腰直角三角形ABD和ACE,∠BAD=∠C

Answer 1

（1）∵在△ABC中：∠BAC=36° ∠CBA=∠BCA∴∠CBA=（180°-36°）÷2=72°又∵在Rt△ABD中,∠BAD=90°,且∠ADB=∠ABD∴∠ABD=（180°-90°）÷2=45°又∵∠DBC=∠CBA+∠ABD∴∠DBC=72°+45°=117°（2）∵在△ACE中...