Answer:
1. x + x = 90° 2x = 90 degrees 2x / 2 = 90 degrees / 2 x = 45
2.2x + 30 + x = 180 degrees
3x = 180 degrees - 30
3x = 150 degrees
3x / 3 = 150 degrees / 3
x = 50
3. x + 2x + 15 = 90 degrees
3x = 90 degrees - 15 3x/3 = 75°3
3x = 75 degrees
x = 254. 9x - 15 + x = 180 degrees
10x = 180 degrees + 15
10x = 195 degrees
10x / 10 = 195 degrees / 10
x = 19.5
