4.5+Using+Congruent+Triangles

In this section, you will use congruent triangles to plan and write proofs, and to prove parts of a triangle are congruent using CPCTC.(**__C__**orresponding **__P__**arts of **__C__**ongruent __**T**__riangles are __**C**__ongruent.)

http://en.wikipedia.org/wiki/CPCTC

http://library.thinkquest.org/20991/geo/ctri.html

Given: ABIICD, BCIIDA Prove: AB is congruent to CD



Given: A is the midpoint of MT. A is the midpoint of SR. Prove: MSIITR



Given: Angle 1 is congruent to angle 2. Angle 3 is congruent to angle 4. Prove: Triangle BCE is congruent to Triangle DCE.