Question

Find x for the trapezoid.
J
K
(2x+15).. (3x-20).
(x +15).
N4
M.

Answer 1

50°

Explanation:

All quadrilaterals' interior angles sum to 360°:

(x + 15)° + (2x + 15)° + (3x - 20)° + x° = 360°

x + 15 + 2x + 15 + 3x - 20 + x = 360

7x + 10 = 360

7x = 360 - 10

7x = 350

x = 50°