Question

如图，将△ABC绕其顶点A顺时针旋转30°后，得△ADE.求∠BAD的度数

Answer 1

∠BAD=30°
∠CAB=∠EAD,∠EAB是公共角
∠CAB-∠EAB=∠EAD-∠EAB,即∠CAE=∠BAD=30°

Answer 2

30du 转过去了呗
书面解答是
∠BAD=30°
∠CAB=∠EAD,∠EAB是公共角
∠CAB-∠EAB=∠EAD-∠EAB,即∠CAE=∠BAD=30°