Base angles of an isosceles triangle are congruent
*use two column proof please*
I believe that one part of the proof has to deal with the postulate of congruency. I had to do this in high school, i hated it. Depending on how big of a sense of humor your teacher or professor has you could always use the cop out answer: "It just is/does" Hope that helps.
WHAT THE HECK ?
draw a triangle ABC with bc as base & AB=BC
now, assume <B is not equal to<C.
now draw a lineAD perpendicular to BC.
now, sin triangles ABD & ADC,
<ADB= <ADC (90*)
AB=BC (since triangle ABC is isosceles)
AD=AD(common line in the triangles)
so, triangles ABD & ADC are congruent.
that guys a ******* wizard.
Sorry but i cant help you there because i ant no teacher
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