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