In the figure, the value x is
x = 8
x = 11
What are similar polygons?
Examining the figure, we can use the proportion below to solve for x
Case 1:
x/ 36 = 10/45
x = 10 * 36 / 45
x = 8
Case 2:
30 / (x + 7) = 25 / 15
x + 7 = 30 * 15 / 25
x + 7 = 18
x = 18 - 7
x = 11