SOLUTION FOUND. You can extend EF and CB until they intersect.

http://i900.photobucket.com/albums/ac204/lamp23/par.jpg

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- March 30th 2012, 08:25 AMlamp23Advanced proof of parallelograms having equal areas
SOLUTION FOUND. You can extend EF and CB until they intersect.

http://i900.photobucket.com/albums/ac204/lamp23/par.jpg - March 30th 2012, 09:07 AMHallsofIvyRe: Advanced proof of parallelograms having equal areas
If all you are given is that ABCD and DEFG are parallelograms then you

**can't**prove they have the same area- it's not true! It is not true that all parallelograms have the same area. What properties of ABCD and DEFG are you given that you haven't mentioned? - March 30th 2012, 09:09 AMemakarovRe: Advanced proof of parallelograms having equal areas