" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
KArena A dan C berseberangan, maka
∠A = ∠C
⇒ 2x - 10 = x + 15
⇒ 2x - x = 15 + 10
⇒ x = 25°
maka besar B
∠B = 180 - ∠A
= 180 - (2x - 10)
= 180 - (2(25) - 10)
= 180 - (50 - 10)
= 180 - 40
= 140°
Jawab : C
Terimaakasih semoga membantu