Question

Find x of this shape.

Answer 1

x = 9

Explanation:

M is at the midpoint of GA and N is at the midpoint of HA, hence

MN is a mid-line segment and is half the length of GH, that is

5x =
`(1)/(2)`(15x - 45) ← multiply both sides by 2

10x = 15x - 45 ( subtract 15x from both sides )

- 5x = - 45 ( divide both sides by - 5 )

x = 9