lesson+plan

Have Students discover the relationships of quadrilaterals to the properties of diagonals and interior angles by:

Starting with the relationships of the diagonals, find a specific quadrilateral. Starting with the relationships of quadrilaterals, find the relationship of the diagonals. Starting with the relationships of the interior angles, find the specific quadrilateral. Starting with the diagonals of parallel sides and the relationships of the interior angles of created, find the specific quadrilateral.

Discuss with the student's to create a chart that shows the relationships of diagonals and interior angles of the different quadrilaterals.