Thread: plz help me with this..

ABCD is a quadrilateral . F is a point on AD such that AF=2.1cm and FD=4.9cm. E and G are points on AC and AB respectively such that EF//CD and GE//BC. Find
a) Area of triangleAGE/Area of trapezium GBCE
b) Area of triangleBCD/Area of triangleGEF

Originally Posted by snigdha

ABCD is a quadrilateral . F is a point on AD such that AF=2.1cm and FD=4.9cm. E and G are points on AC and AB respectively such that EF//CD and GE//BC. Find
a) Area of triangleAGE/Area of trapezium GBCE
b) Area of triangleBCD/Area of triangleGEF

You may view this as a 3-dimensional figure also,
a 3-sided pyramid similar to a tetrahedron with base BCD.

All sides are divided in the same ratio...

AF:FD=AG:GD=AE:EC=GE:BC=EF:CD=GF:BD=[2.]:[4.9]

AF:AD=AE:AC=AG:AB=[2.1]:7

Area of AGE to Area of ABC is

Area of AGE to GBCE is 7^2-[2.1]^2)" alt="(2.1)^27^2-[2.1]^2)" />

Area BCD to GEF is