Question

Find the perimeter of the regular polygon

The perimeter of the polygon is ______ units

Answer 1

Answer:

3

Step-by-step explanation:

Set the sides equal to one another because it's an equalteral triangle.

5 - 2x = -4x + 9

Add 4x to the left side and subtract 5 getting 2x = 4 meaning x=2

Plug X into the equation for the sides 5 - 2(2)=1

1+1+1= 3 because there are 3 sides that equal 1.

Answer 2

Answer:

$\Large \boxed{\sf 3}$

Step-by-step explanation:

All side lengths are equal because the triangle is an equilateral triangle.

$5-2x=-4x+9$

Solve for x

$2x=4$

$x=2$

Each side length measures

$5-2(2)=1$

Perimeter is the sum of all side lengths

$1+1+1=3$