數學問題[形心]

圖片參考：http://i137.photobucket.com/albums/q224/gerrard1023/maths-1.jpg

Area of ADC = area of DBC
Let area of AGF = area of FGC(since AF=GC) = b sq units
Let area of BGF = area of CEG(since BE = CE) = a sq units
1 + 2a = 1 + 2b
a = b
Area of ECA = area of BEA
a + 2b = 2 + a
b = 1
SO,a = 1
Area of CFGE
= a + b
= 1 + 1
= 2 sq units

very good!!!!!!

a .b .c .d .?!!@@^^