

Online Geometry
Problem 8. Triangle, Angles, 90 Degrees, Congruence, Auxiliary Lines.
Level: High School, Honors Geometry, College,
Mathematics Education
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In the figure below, AB = BC = AD, angle B =
90º, angle CAD = x and angle ACD = 45º  x. Find x. Try to use elementary geometry (Euclid's Elements.)
See
also:
Art 01







