Question

tolong kak makasiiih​

Answer 1

Jawaban:

1. A) = 180° - 50°

= 130° ÷ 2

= 65° (segitiga sama kaki maka kedua sisi nya besar nilai nya)

B) 5x + 2x + x = 180°

8x = 180°

x = 180°/8

x = 22,5

pembuktian: 2(22,5) = 45°

5(22,5) = 112,5°

x = 22,5°

= 180°

C) 60° + 2x + 3x = 180°

5x = 180° - 60°

x = 120°/5

x = 24°

pembuktian: 60°

2(24) = 48°

3(24) = 72°

= 180°

D) 90° (siku-siku) + 3x + 4x = 180°

7x = 180° - 90°

x = 90°/7

x = 12,857142

pembuktian: 90°

3(12,857142) = 38,571426

4(12,857142) = 51,428568

= 179,99 atau dibulat kan menjadi 180°