advertisement

Name Practice 8-5 Quadrilaterals Classify each quadrilateral. Be as specific as possible. 6 cm 1. 18 cm 15 cm 2. 8 cm 18 cm 8 cm 15 cm 20 cm Trapezoid 8 in. 3. Rectangle 17 cm 4. 4 in. 4 in. 17 cm 17 cm 8 in. Parallelogram Rhombus For 5 and 6, the measures of three angles of a quadrilateral are given. Find the measure of the fourth angle. 5. 90°, 145°, 78°, 47° 6. 110°, 54°, 100°, 7. Name the vertices of the square to the right. F G L A 96° F, G, A, L 8. Three of the angles of a quadrilateral measure 80°, 100°, and 55°. Which is the measure of the fourth angle? A 115° B 120° C 125° D 130° 9. Explain It Can a trapezoid have four obtuse angles? Explain. Sample answer: The figure would not be able to close the fourth side if all of the angles were obtuse. 62 Topic 8 © Pearson Education, Inc. 5 Practice 8-5 17 cm