Question

Calculate the size of each angle in the triangle.
2x
2x + 5
3x+7

Answer 1

48°, 53°, and 79°

Explanation:

The sum of angles of a triangle is 180 (degrees), so you have ...

2x +(2x +5) +(3x +7) = 180

7x +12 = 180

7x = 168

x = 24

Then the measures of the angles are ...

2(24) = 48

2(24) +5 = 53

3(24) =7 = 79

The angles are 48°, 53°, and 79°.