Question

Jenis segitiga ABC, <A=2× derajat, <B=3× derajat dan <C=40 derajat.

Answer 1

Verified answer

A + B + C = 180
2x + 3x + 40 = 180
5x = 140
x = 28
2x = 56
3x = 84
dan 40
Berarti segitini ini termasuk segitiga lancip

Answer 2

Verified answer

< A = 2x°
< B = 3x°
< C = 40°

< A + < B + < C = 180°
2x° + 3x° + 40° = 180°
5x° + 40° = 180°
5x° = 180° - 40°
5x° = 140°
x = 140°/5
x = 28°

< A = 2x° = 2 × 28° = 56°
< B = 3x° = 3 × 28° = 84°
< C = 40°

Maka jenis segitiga ABC adalah segitiga lancip karena sudut-sudutnya kurang dari 90°