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Sudut B = 180° - 110° = 45°
b. Sudut D = 180° - 65° = 115°
Sudut F = 65° (karena berdekatan dengan sudut E)
Sudut G = 115° (karena berdekatan dengan sudut D)
c. Sudut K = 90° (karena sudut siku - siku)
Sudut L = 90° (karena sudut siku - siku)
Sudut N = 180° - 30° = 150°
d. Sudut S = 180° - 40° = 140°
Sudut R =180° - 40° = 140°
B = 180 - 110 = 70 drajat
D = 180 - 45 = 135 drajat
b.
F = E = 65 drajat
G = 180 - 65 = 115 drajat
H = G = 115 drajat
c.
K = 90 drajat
L = 90 drajat
N = 180 - 30 = 150 drajat
d.
S = 180 - 40 = 140 drajat
R = 180 - 40 = 140 drajat
**maaf kalau salah