Question

Tolong yang bisa jawab nomor 9 dan 10
please.....
yang bisa tolong bantuin ya,,,,,,

Answer 1

Yg nomer 9
<CDE = <DAF = <DEF = 65
<CED = <EBF = x
<C = <BEF = 70
maka
 <CED + <DEF + BEF = 180
x + 65 + 70 = 180
x = 180 - 65 - 70
x = 45 (C)

yg nomer 10
itu segitiga sama kaki
<BAD = <BCD = 55
<B = 180 - 55 - 55 = 70
maka<CBD = 70 : 2 = 35 (C)