Answer:
x = 18
Explanation:
there is a right-angle indicator which means it measures 90°
we know the sum of the three interior angles in a triangle is 180°
therefore, we can write this equation:
2x + 3x + 90 = 180
combine 'like terms' to get:
5x + 90 = 180
subtract 90 from each side to get:
5x = 90
x = 90/5 or 18
Check:
2(18) + 3(18) + 90 should equal 180
36 + 54 + 90 should equal 180
90 + 90 = 180
180 = 180