

Problem 859: Isosceles Right Triangle, Angles,18, 45 Degrees,
Congruence, Perpendicular bisector. Level: High School, SAT Prep, College geometry

The figure shows an isosceles right triangle ABC.
EF is the perpendicular bisector of BC, AB=BC=AD=DE=DF and angle
BAD = 18 degrees. Find the measure of angle BDF. Problem submitted by Charles T.


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