if EB=EC and AB=DC prove <A=<D
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trapezoid
What have we got to prove? Whether we have to prove a triangle as an Isoseles triangle or prove a property of an isoseles triangle. Hey, do u go to ALHS, i had that same problem on my test today. Greenehornet15@yahoo.com
prove the intersction for crisp set theory
prove- show someone that you can do it, or show someone somthing that they dont believe.
You cannot prove "a right angle triangle". You may or may not be able to prove statements about right angled triangles but that will depend on the particular statement.