Make sure that if the answer is YES, you are able to prove the property. If the answer is SOMETIMES, you should be able to provide examples and counterexamples. For the area formulas, provide a clear justification.

Fill out each row from left to right. Anything you prove can be used in the following boxes (to the right). This also means that to prove a property you can only assume things that are to the left of the box you are working on. You may also need to consult our minimal definitions of quadrilaterals and the guide for filling out this form.

 

 

SIDES

ANGLES

DIAGONALS

AREA

Parallel?

Congruent?

Congruent?

Relationship?

Congruent?

Bisecting?

Perpendicular?

Triangle Partition?

Kite










Trapezoid










Isosceles Trapezoid










Parallelogram










Rhombus










Rectangle










Square