This activity was developed by a student or students at Mainland High School which is located in Daytona Beach, FL. It is still a "work in progress" with editing and improvements yet to come.
Plot and label each point on the coordinate system below: A(2, 3); B(4, 7); C(12, 8); D(10, 4). Connect A to B, B to C, C to D, and D to A to form a quadrilateral. What type of quadrilateral does this appear to be?
Use the slope formula m = ( y_{2}  y_{1} ) /( x_{2}  x_{1} ) to find the slope of each segment. 
Do the results confirm your answer to question 1? Explain why or why not.
Plot and label each point on the following coordinate system: A(1, 3); B(4, 7); C(9, 7); D(6, 3). Connect the points in the same order as in the first drawing. What type of quadrilateral does this appear to be?
Use the distance formula, , to find the length of each segment.

Do the results confirm your answer to question 4? Explain why or why not.
Draw the diagonals ABCD. Use the slope formula to find the slope of each diagonal.
What do you think is true about the diagonals of this quadrilateral?
On a seperate sheet of graph paper, plot and label each point: A (3, 2); B (2, 5); C (8, 7); D (9,4). Draw the quadrilateral that is formed. Draw the diagonals. What type of quadrilateral does this appear to be?
Use the slope and distance formulas to find information about the sides and diagonals of the quadrilateral created in number 9.
What can you now conclude about the type of quadrilateral that ABCD is?
MathSummer Activity
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