# Discovering Quadrilaterals, Parallelograms, and Rectangles

- Author:
- Andrew Riddle

- Topic:
- Parallelogram, Quadrilaterals, Rectangle

*1.) Using Google, search for and define the term "quadrilateral."*

## Quadrilateral ABCD

## Characteristics of PARALLELOGRAMS

**2.) Using google search for and define the term "parallelogram."**

## Parallelogram ABCD

## Manipulate the parallelogram above by moving points A and B. Then, answer the questions listed below.

*3.) What do you notice about the opposite angle measures in the parallelogram as compared to the quadrilateral? (A and C, B and D)*

*4.) What do you notice about the consecutive angle measures in the parallelogram as compared to the quadrilateral? (A and B, B and C, C and D, D and A)*

*5.) What do you notice about the side lengths in the parallelogram as compared to the quadrilateral? *

*6.) What do you notice about the diagonals in the parallelogram as compared to the quadrilateral? *

*7.) Summarize what you learned about the parts in a parallelogram by selecting all TRUE statements from below. *

## Characteristics of RECTANGLES

*8.) Use Google to search for and define the term "rectangle." *

## Rectangle ABCD

*9.) Using the applet above, check off the characteristics of rectangles. *

*10.) What are some characteristics that are true for rectangles but NOT for parallelograms? *

*11.) a.) Do you think that all rectangles are also parallelograms? Explain your answer.
b.) Do you think that all parallelograms are also rectangles? Explain your answer.*