Plot the points
What shape is
Look closely at the shape created by the points. Do you notice any special characteristics about the shape?
Did you notice that it had a pair of parallel sides?
Find the area of the shape.
Consider the trapezoid as separate parts and visualize the parts reconstructed as a rectangle.
Try summing the area of the different pieces.
Use the formula below from the Math Notes box in Lesson 1.1.2 for extra help to calculate the area of the trapezoid.
Explore the problem with the eTool below.
Click the link at right for the full version of the eTool: 7-91 HW eTool