Question

Tolong dijawab no. 9 dan 10

Answer 1

9.
a.>5a+45°=180°
5a=180°-45°
5a=135÷5
a=27°
b.>4b=160°÷4
b=40°
c.>13d+115°=180
13d=180°-115°
d=65÷13=5
>4c+65°+65°=180°
4c+130°=180°
4c=180°- 130°
4c=50°
4c=50°÷4
c=12,5°
d.>2e-12°=130°
2e=130°+12°
2e=142°
e=142°÷2
e=71°
no 10 diatas yah
semoga benar,jadikan jawaban terbaik yah 