Question

****25 POINTS!!!! PLEASE PLEASE HELP! ASAP

How would I answer this in a two column proof?

Prove base angles in an isosceles triangle are congruent

Answer 1

Step by Step

This is probably the most difficult problem in elementary Geometry. I stopped counting after about 20 steps. The trick is to follow a very carefully constructed diagram which looks simple enough until you start using it.

Givens

• Triangle ABC with 2 equal sides AB and AC.
• BC is the third side and is not equal to either of the other 2.