Subject: Areas in a trapezoid
Date: Sat, 5 Apr 1997 14:29:44 +0800 (HKT)
From: Calvin, Lui Lai Kiu

Dear Alexander,

Hi ,I am Ronald.I have a mathematics question that I don't know how to solve.The question is as following:

Area of trapezium ABCD is 34 cm sq. where AD // BC, E and F are two point on the line AB such that AE =BF.CE intersects DF at O.If the area of triangle OCD is 11cm sq. ,find the sum of the area of triangle OED and triangle OCF.

I try to make a line through O where the line // to AD,but it cannot be found.i have also tried to let A(x,y) ,B(a,b) .........etc and solve,but it cannot be found,too.Could you please help me to solve it?

Thank you very much.


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