Question

Find the measurement of angle A & B

Answer 1

Angle A = 65

Angle B = 78

Explanation:

This is a triangle, and the total angles in a triangle is 180 degrees. What you can do is make all of the angles equal 180 and then solve for x.

180 = (2x +4) + (2x - 9) + x

180 = 2x +4 + 2x - 9 + x

180 = 4x -5 +x

180 = 5x - 5

185 = 5x

37 = x

Now, plug in x to solve for the angles.

• Angle A = 2(37) - 9 = 65
• Angle B = 2(37) + 4 = 78
• Angle C = x = 37