SOLUTION: How can I prove triangle labeled ∆ AGC is isosceles? I have to show in a two column chart how the triangle is isosceles. I have no idea where to begin can you help me?

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Question 152071: How can I prove triangle labeled ∆ AGC is isosceles? I have to show in a two column chart how the triangle is isosceles. I have no idea where to begin can you help me?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
If triangle AGC exists as isosceles triangle, then
angle%28A%29=angle%28C%29,
also,
side%28AG%29=side%28GC%29
You have to take into consideration that whatever length you extend the vertex on point A and C (at the same length), angle%28A%29 will always be equal to angle%28C%29.
Thank you,
Jojo