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Geometry Level 2

E D ∥ A B D B ∥ A C A B = A C ∠ C = 90 ° ∠ D = 102 ° ED\parallel AB\\ DB\parallel AC\\ AB=AC\\ \angle C=90°\\ \angle D=102°

Find ∠ B C F \angle BCF


The answer is 39.

Andrew Levada by Andrew Levada , 16, Russia

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1 solution

X X
May 28, 2018

∠ A C B = 102 2 = 51 , ∠ B C F = 90 − 51 = 39 \angle{ACB}=\frac{102}2=51,\angle{BCF}=90-51=39

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