1. 6 – 7 Proofs Using Coordinate Geometry
L.E.Q. How do you prove theorems using figures in the coordinate plane?

2. Midsegment of a Trapezoid:
The segment that joins the midpoints of the nonparallel opposite sides.

3. Trapezoid Midsegment Theorem:
The midsegment of a trapezoid is parallel to the bases.
The length of the midsegment of a trapezoid is half the sum of the lengths of the bases.

4. Planning a Coordinate Geometry Proof:

5. Real – World Connections:
The rectangular flag below is constructed by connecting the midpoints of its sides. Use coordinate geometry to prove that the quadrilateral formed by connecting the midpoints of the sides of a rectangle is a rhombus.

6. Homework:
Pg #s 1-4 all.