EFGH is a convex quadrilateral having diagonals EG and FH. It is known that EF = GH, while EH/FG = √3 + 1 and Angle GHE - Angle HEF = 30^o.

Determine the value of (Angle EFG - Angle FGH).

Working with Geometer's Sketchpad indicates the answer should be 90°

Posted by Charlie on 2007-11-08 12:45:05