# G.2.1.3 Making Quadrilaterals

1. Draw a triangle.
2. Find the midpoint of the longest side of your triangle.
3. Rotate your triangle 180 degrees using the midpoint of the longest side as the center of the rotation.
4. Use the pen tool to mark corresponding parts (side lengths and angles) with dashes and curves.

5. Make a conjecture and justify it. a. What type of quadrilateral have you formed?

5. Make a conjecture and justify it. b. What is the definition of that quadrilateral type?

5. Make a conjecture and justify it. c. Why must the quadrilateral you have fit the definition?