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 Quadrilateral Quandary (Posted on 2014-11-02)
Consider a piece of convex paper quadrilateral ABCD with AB=1, BC=2, CD=3, AD=4 and ∠ ADC = 30o

A is folded on to C forming the crease EF with E in AD and F in BC.

Determine:
• The length of the crease EF.
• The area of the quadrilateral EFCD.

 No Solution Yet Submitted by K Sengupta No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
 Geometers' Sketchpad approximations Comment 1 of 1
EF ~= 1.65643

Area of EFCD ~= 2.72265

 Posted by Charlie on 2014-11-02 22:26:15
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