Triangle and
Squares 8. Level: High School, SAT Prep, College
geometry

Squares ABDE and BCFG are constructed
internally on the sides AB and BC of a triangle ABC, Prove the following:
1. CD and AG are congruent and perpendicular.
2. DC, GA, and EF are concurrent in P.
3. Angles DPE and FPG are both equal to 45 degrees.