Plan a coordinate proof of the Trapezoid Midsegment Theorem (Theorem 6-21).
How do you start?
Start by drawing a diagram. Think about how you want to place the figure in the coordinate plane.
Step 1 Draw and label a figure.
Midpoints will be involved, so use multiples of 2 to name coordinates.
Step 2 Write the Given and Prove statements.
Use the information on the diagram to write the statements.
Use the diagram below.
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