Answer:
∠R = 55.6°
∠Q = 62.2°
∠S = 62.2°
Step-by-step explanation:
total interior angle sum = 180°
2x + 29 + 4x + 9 + 4x + 9 = 180
combine like terms:
10x + 47 = 180
subtract 47 from both sides of the equation:
10x = 133
divide both sides by 10:
x = 13.3
∠R = 2(13.3) + 29 = 55.6°
∠Q = 4(13.3) + 9 = 62.2°
∠S = ∠Q
