# Thread: plz help me with this..

1. ## 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

2. 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]

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