" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jumlah dua sudut yang berdekatan diantara sisi-sisi sejajar = 180°
Jadi:
(2x - 30) + (3x + 50) = 180
5x + 20 = 180
5x = 180 - 20
5x = 160
x = 32°