MathDB
ratio of sides, square on hypothenuse of a right triangle

Source: Tournament Of Towns Spring 1999 Junior 0 Level p2

May 7, 2020
ratiosquaregeometryright triangle

Problem Statement

ABCABC is a right-angled triangle. A square ABDEABDE is constructed on the opposite side of the hypothenuse ABAB from CC. The bisector of C\angle C cuts DEDE at FF. If AC=1AC = 1 and BC=3BC = 3, compute DFEF\frac{DF}{EF}.
(A Blinkov)