1. 4. Find & copy the definition of a parallelogram and label the quadrilateral so it satisfies the definition. _________________________________________________ 5. List the sufficient Conditions for proving a parallelogram from p.413. Label the quadrilateral so it satisfies the condition. If, in a quadrilateral, (a) ______________________________________________ ______________________________________________, or (b) _______________________________________________ _______________________________________________, or (c) ________________________________________________ ________________________________________________, or (d) ________________________________________________ ________________________________________________ then the quadrilateral is a parallelogram.

2. Section 7-8: Proving Parallelograms Name:__________________ Date:_______________ Do Now: 1. 2. 3.

3. 6. Use the diagrams to decide if the markings are sufficient condition to prove that the quadrilateral is a parallelogram. If yes, identify the condition 7.

4. 8.Complete each proof using the definition of or the sufficient conditions theorem for a parallelogram. Given: E is the midpoint of AC & BD To prove: ABCD is a parallelogram A C D B Given: MN = OP,  NMO   POM To prove: MNOP is a parallelogram M P N O