plis bantu dong kak
Garis dan Sudut
A. Nilai a, b, c, dan d
Nilai a =
3a + a = 180°
4a = 180°
- a = 180° ÷ 4
- a = 45°
Nilai b =
b + b + b = 180°
3b = 180°
- b = 180° ÷ 3
- b = 60°
Nilai c =
3c + 45° + 30° = 180°
3c + 75° = 180°
3c = 180° - 75°
3c = 105°
- c = 105° ÷ 3
- c = 35°
Nilai d =
4d + 60° + d = 180°
5d = 180° - 60°
5d = 120°
- d = 120° ÷ 5
- d = 24°
B. <ABD, <DEG, <PQS, <KLN
ABD = 3a
ABD = 3 × 45°
ABD = 135°
DEG = b + b
DEG = 60° + 60°
DEG = 120°
PQS = 3c + 45°
PQS = 3 × 35° + 45°
PQS = 150°
KLN = 4d + 60°
KLN = 4 × 24° + 60°
KLN = 156°
