how do i find the value of 3x if all the exterior angles are 1’s

Question

it’s a triangle with all side’s congruent and the equal one

Answer 1

Some things that may help you solve this problem are the following:

A triangle with all three sides having equal lengths is called an "equilateral triangle."

If the 3x is a length of a side of the triangle, you know that every side is equal in length, so you could set any other side length equal to 3x and solve the equation.

If the 3x is related to an angle measure, the following would help:

Every equilateral triangle also has all interior angle measures equal. Since the sum of the angle measures of a triangle is 180 degrees, you can divide this by 3 to find the measure of each interior angle of the triangle. Then if you have an expression with "x" in it for one of the interior angles, you could set it equal to the measure of an interior angle and solve for x.

An exterior angle of a polygon (including triangles) is supplementary to the adjacent interior angle. Supplementary angles add up to 180 degrees. So you could add the measure of an interior angle to the measure of the exterior angle next to it and set that sum equal to 180 degrees, then solve for the angle or variable you need.

I hope that helps! it is difficult to understand the exact problem you are working with since the diagram is missing and your description is a little mysterious, but I believe these basic properties should help.