Click here to see a proof of the converse of the
parallelogram angle theorem. As you read through the
proof, look for how to complete the statements on the
right.
Complete the statements by choosing the correct
answer from the drop-down menu
are being used to get the equation in
step 6
Y are being used to get the equation in
step 8.
are being used to get the equation in
step 9
In step 14, "similar argument" means to draw segment
and follow the same logic in steps 3-12