What is the length of side BC of the triangle? Plz show me how you did it so i can learn how to do it.

enter image source here

1 Answer
Nov 10, 2017

BC=24

Explanation:

The triangle is isosceles, because (from the diagram) /_ABC=/_ACB - note how the angle there is marked on both of these. If these angles are equal, this means that the sides AC=AB

let AC=AB
x+8=2x-1
8=x-1
x=9

We want to find the length of BC, which is (3x-3). We know that x=9

BC=3x-3
BC=3(9)-3
BC=27-3
BC=24