Question 175611
Prove: (line)CD bisects (angle) ACB 

Plan: (this space is blank, what should I write here? It's slightly confusing) 


What I do know now is that two sides are congruent, and the altitude creates two right angles
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AC=CB----isos triangle
angle A = angle B----angles opposite equal sides
angle ADC = angle BDC ---- def of altitude
angle ABD = angle CBD------if two corresponding angles of a triangle are equal the 3rd angles are equal
CD bisects angle ACB--------definition of angle bisector
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Cheers,
Stan H.