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Use dynamic geometry software. a. Construct any quadrilateral ABCD whose opposite sides are congruent. b. Is the quadrilateral a parallelogram? Justify your For the Board: You will be able to prove that a quadrilateral is a parallelogram. Anticipatory Set: There are 6 methods of proving that a figure is a Theorems: •. If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. PROVING QUADRILATERALS ARE PARALLELOGRAMS WORKSHEET. Problem 1 : In the diagram given below, if AB ? CD, AD ? CB, then prove that ABCD is a parallelogram. Daily L:earning Target (DLT). Friday November 30, 2012. ? “I can understand, apply, and remember how to prove that a quadrilateral is a parallelogram.” Day 2: SWBAT: Prove Quadrilaterals are Parallelograms. Pages 11 - 15. HW: pages 16 - 17. Day 3: SWBAT: Prove Triangles Congruent using Special ParallelogramC. D. Thrm 1: If both pairs of opposite sides are congruent, then the quadrilateral is a parallelogram. Given: Prove: Statements Reasons. Can you prove that the quadrilateral is a parallelogram based on the given information? Explain. 7). 8). 9). 10). 11). 12). Page 3