Question

What is the length of side BC of the triangle? Enter your answer in the box.

Answer 1

You set the equiangular triangles equal to each other

Answer 2

The triangle is an equiangular triangle so that means it must be an equilateral triangle.

3x - 3 = x + 8

2x = 11

x = 5.5

BC = 3(5.5) - 3

BC = 13.5