• Click on the link below.
• Move each vertex.  How many different quadrilaterals can you form?
• Click the arrow on the folder and investigate the table and the moveable point.

• Resave the file and call it "Create Polygons".
• Add two more folders. Name the first: 3-Sides (Triangles).  Name the second: 5-Sides (Pentagons)
• Below are the expressions and table to add to the 3-Sides (Triangles) folder.  
• Add similar expressions and table to add to the folder for pentagons. 

Additional Notes:

• A moveable point must start and end the table to connect the sides of the figure.
• Hold the circle until the menu shows. Select the icon to connect the points and to move them in all directions.
• The variables MUST be unique.  Choose a system that makes sense to you. In this case the columns are named P3x and P3y representing the x-column for a polygon of 3 sides and the y-column for a polygon of 3 sides.
• The variable point was named: (x3,y3) for a variable point for the 3-sided figure.
• Check how the variables are named for the 4-sided polygon.  Follow a similar pattern for the 5-sided polygon.

• Save your work in your Desmos Account.
• Save the link to your google spreadsheet for your partner to access or email the link to your partner.