Question 3 options:
in an equilateral triangle, all 3 sides are equal length, and the perimeter of an equilateral triangle is 3 times the length of one side.

if one side measures 9 + 3x, and the measure of another side is 5x – 5, what is the perimeter of the equilateral triangle?

90

Step-by-step explanation:

Given: Measure of one side of equilateral triangle =

Measure of another side of equilateral triangle =

In equilateral triangle all three sides are equal in length.Therefore,

On substituting the value of x in side of equilateral triangle,

One side of equilateral triangle =

Perimeter of equilateral triangle = 3 ( length of one side) ........( given)

perimeter of equilateral triangle =

step-by-step explanation:

f

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.