Question

In ΔWXY, m∠W = (2x - 12)°, m∠X = (2x +17)°, and m∠Y = (9x - 7)°. Find m∠X.​

Answer 1

45°

Explanation:

Angles in a triangle add to 180 degrees, so

• 2x - 12 + 2x + 17 + 9x - 7 = 180
• 13x - 2 = 180
• 13x = 182
• x = 14

So, the measure of angle X is 2(14)+17=45°