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Given: Ray DR bisects angle CDA, angle 3 is congruent to angle 1, and angle 4 is congruent to angle 2 Prove: Angle 3 is congruent to angle 4

Triangle proofs. Questions & Answer keys.

Given: AC=DC and BC= CE Prove:Tri ABC= TRi DEC

A helpful scientific calculator that runs in your web browser window.

In-depth review of how to write a proof, with examples and definitions along the way.

Interactive quiz on properties

This provides 4 to 5 congruent triangle proofs for more complex situations.

This site outlines the theorems about parallelograms with proofs to these theorems.

Very comprehensive site concerning mathematical proofs. Contains excellent examples and interactive exercises.

I need help with problems on right triangles. [ File > http://www.tutor.com/SharedSessionFiles/9e83283f-0640-454c-b7b3-807eedd23958_Right_Triangle_Homework.jpeg ]

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