Question

Eason

求解

LBOC - 180 - (x+y) = 180 - 86 = 124 71
6.如右圖,若∠A=52°,∠G=74°,則∠B+<C+∠D+<E+ <F=
666度。
414
360°-52-74
12
= +34
180×5-+34
=
900-234
F
B
A
74°

Answer 1

JeremyH

如圖
用三角形和四邊形內角和