Draw 2 parallelograms of different sizes. [br]Use the polygon tool to make opposite sides parallel. Locate all vertices on the intersection of grid lines.[br]Measure the lengths of the opposite sides and the size of opposite angles.[br]Draw the diagonals and measure the distance from the vertex to the point of intersection of the diagonals.

What can you conclude about all the measures?

Draw 2 rectangles of different sizes. [br]Use the polygon tool to make opposite sides parallel. Locate all vertices on the intersection of grid lines.[br]Draw the diagonals and measure the lengths of opposite sides and diagonals.

What can you conclude about the diagonals?

Draw 2 rhombuses of different sizes.[br]Use the polygon tool to make all sides equal and opposite sides parallel. Locate all vertices on the intersection of grid lines.[br]Measure the size of opposite angles.[br]Draw the diagonals and measure the distance from the vertex to the point of intersection of the diagonals.

What do you notice about opposite angles?[br]At what angle do the diagonals intersect?[br]What can you conclude about the diagonals?

Use the regular polygon tool to draw 2 squares of different sizes.[br]Draw the diagonals. [br]Measure the length of the diagonals and the distance from the vertex to the point of intersection of the diagonals.

How are the diagonals of a square? [br]At what angle do the diagonals intersect?