SAYAMBARRAA BOSQ DAPET 5 POINT WAYVAW WAYAW dengan CARA

No. 3
A. tentukan nilai a dan b
nilai a =
180° = 2a + 68°
2a = 180° - 68°
2a = 112°
a = 112° : 2
a = 56°

nilai b=
(5b + 12) + 2b = 180°
5b + 12 + 2b = 180°
5b + 2b = 180° - 12
7b = 168
b = 168/7
b = 24°

B. hitunglah besar
DEG = 68° + 56° = 124°

KLN = 5b + 12
5(24°) + 12
120° + 12° =
132°