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Geometry
Problem 8 with Solution: Triangle, Angles, 90 Degrees, Congruence, Auxiliary Lines.
High School, College,
Math 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 solution below
See
also:
Art 01
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