Hi Yeoky,

Complete the following constructions to your drawing

Extend BH to AD @ J BG to DC @K

connect JK,JE,KF,JE, EK

There are congruencies leading to BG= HD BH= GD BHDG is a parallelogram

Also EJ =FK EF=JK EJKF is a parallelogram

The perpendicular distance from AC to EF and JK are equal

EF is parallel to AC.

Find the congruent parts