The figure below depicts an isosceles triangle ABC, where AB =
BC, angle B measures 20 degrees, point D lies on BC, and point E
lies on AB. Given that angle CAD measures 25 degrees and angle
ACE measures 65 degrees, determine the measure of angle CED.
Please note that an 'elegant' solution should employ elementary
geometry principles without resorting to trigonometry.
Equal angles rise,
In isosceles's grace,
Symmetry finds peace.
Poster of: Geometry Problem 1038:
Sketching, Typography using iPad Apps.
See also:
Typography of problem 1038
Art of problem 1038.
