Vichien Lindsey

08-25-2005, 03:20 PM

Prove: if an isosceles triangle has an altitude from the vertex to the base, then the altitude bisects the vertex angle.

Given: angle ABC is isosceles; line CD is the altitude to base line AB

To Prove: line CD bisects angle C

Plan: _______?

Proof:

__________________________________________________ __________

Statements / Reasons

the triangle looks kinda like this c

Please help if u can, thanks

a---d---b [/img]

Given: angle ABC is isosceles; line CD is the altitude to base line AB

To Prove: line CD bisects angle C

Plan: _______?

Proof:

__________________________________________________ __________

Statements / Reasons

the triangle looks kinda like this c

Please help if u can, thanks

a---d---b [/img]