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m11gmse_0604_FPL2.indd 375 6-4 Solve It! Notice that the starting and ending figures are both parallelograms. Fold a piece of notebook paper in half. Fold it in half again in the other direction. Draw a diagonal line from a o one vertex to the other. Cut through the folded paper a along that line. Unfold the paper. What do you notice a about the sides and about the diagonals of the figure y you formed? 6-4 Lesson Quiz 1. Is parallelogram KLMN a rhombus, L 7.5 cm a rectangle, or a square? Explain. M 7.5 cm N K 2. In the parallelogram above, if m/KLN 5 63, what is m/MNL? 3. In square ABCD, AE 5 3x 1 5 and B BD 5 10x 1 2. What is the length of AC? A E C D 4. Do you UNDERSTAND? You are asked to draw an equiangular rhombus, an equilateral rectangle, and a parallelogram with four right angles. Will all three figures be squares? 2/13/09 4:58:39 AM Answers Solve It! Lesson Quiz The quadrilateral has > sides. Diagonals are ' bis. of each other, and each diagonal bisects two '. 1. rhombus; The opposite sides of a parallelogram are congruent, so the figure has 4 congruent sides. 2. 63 3. 22 4. A parallelogram with four right angles is a rectangle but not necessarily a square. Prentice Hall Geometry • Solve It/Lesson Quiz on Transparencies Copyright © by Pearson Education, Inc., or its affiliates. All Rights Reserved. 40
