Question

The interior angles of a polygon are; (3x + 30), x, 2x, (x + 20) and 3x. find the value of x

Answer 1

Answer: 49

Explanation:

This polygon has 5 sides, meaning its interior angles add to
`180(5-2)=540^(\circ)`.

`3x+30+x+2x+x+20+3x=540\\\\10x+50=540\\\\10x=490\\\\x=49`