Question

^_^

求解

A
560
9. 如右圖,已知五邊形ABCDE 中,∠A=90°,/D=∠B= 5.°,
ZC+ ZE=200° , ŞI ZB= ?
360 4200 490
(A) 100°
540 +200 + 40 - 8% is
(B) 105°
(C) 120°
(D 125°
B
ISV4200 490
- 400
ON
51492
= Boo
136
nuão
cesorul
8307 5X = 168
Father

Answer 1

Angie

五邊形內角和=540
90+10x+200=540
10x=250
5x=125
Ans:D