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A polygon is regular if each of its sides has the same length. Find the perimeter of the regular polygon.

One side is 5-2x
The other one is -4x + 9
One side is blank
It's a triangle

Respuesta :

SmartiePants851

Answer: 6

Step-by-step explanation:

So if it is a triangle it is a equilateral triangle.

if all the sides equal eachother, we know to find x.

5-2x=-4x+9

+4x

5+2x=9

-5    -5

2x=4

/2

x=2

So if a triangle has three sides, we multiply 2 x 3 or (x) times the number of sides.

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