" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Sudut BDC = 180° - (5p - 1°) = 180° - 5p + 1° = 181° - 5p
Sudut BDC + sudut CBD + sudut BCD = 180°
(181° - 5p) + (160° - 4p) + 64° = 180°
405° - 9p = 180°
-9p = -225°
p = 25°
Jadi sudut BDC = 181° - 5p = 181° - 5(25°) = 181° - 125° = 56°