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Geometry Problem 1138: Square, Perpendicular, Angle, 90 Degrees, Triangle, Congruence. Level: High School, SAT Prep, Honors Geometry, College, Math Education

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In a square ABCD (figure below), E is on AB extended and F on AD extended so that BE = DF. If AG is perpendicular to DE, prove that the measure of angle CGF is 90 degrees.


 

Infographic Geometry problem 1138 Square, Perpendicular, Angle, 90 Degrees, Triangle, Congruence
 



 

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Last updated: Jul 16, 2015 by Antonio Gutierrez.