In the diagram below, ABCD and DEFG are congruent squares, and angle CDG is 60°.
What is angle ACF?
(In reply to
re: Solution by brianjn)
Please be assured that I by no means intended to disparage Charlie, who has contributed many fine puzzles. I saw no way to get around DCG as equilateral/equiangular (since CDG was given as 60, and DC and DG were also give as equal), from which the proof follows as Rosy showed. I was uncertain about the drawing to scale because this also made CG equal FG. My interest and inclinations are more to the logico-numeric than the verbal or geometric, so I should simply have bypassed this one.
re(2): Solution
