Mausuf
1. a. 3x + x + 5x = 180 9x = 180 x = 180 : 9 = 20 sudut A = 3x = 3(20) = 60 sudut B = x = 20 sudut C = 5x = 5(20) = 100 b. segitiga tersebut merupakan jenis segitiga sebarang 2. x + 90 + 60 = 180 x + 150 = 180 x = 180 - 150 = 30 y + 60 = 180 y = 180 - 60 = 120 x + y + z = 180 30 + 120 + z = 180 150 + z = 180 z = 180 - 150 = 30
3x+5x+x=180°
9x=180°
x=20°
3x=60°
5x=100°
2) x= 180°-90°+60°=30°
krn berpelurus maka
y+60°=180°
y=120°
z=180-120-30=30°
9x = 180
x = 180 : 9 = 20
sudut A = 3x = 3(20) = 60
sudut B = x = 20
sudut C = 5x = 5(20) = 100
b. segitiga tersebut merupakan jenis segitiga sebarang
2. x + 90 + 60 = 180
x + 150 = 180
x = 180 - 150 = 30
y + 60 = 180
y = 180 - 60 = 120
x + y + z = 180
30 + 120 + z = 180
150 + z = 180
z = 180 - 150 = 30