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Name Class Date Practice 6-4 Special Parallelograms For each parallelogram, (a) choose the best name, and then (b) find the measures of the numbered angles. 1. 2. 54 1 4 106 3 4 All rights reserved. 2 3 1 3. 2 4. 1 30 4 2 1 3 60 2 3 4 68 The parallelograms below are not drawn to scale. Can the parallelogram have the conditions marked? If not, write impossible. Explain your answer. © Pearson Education, Inc., publishing as Pearson Prentice Hall. 5. 6. 5 3.5 3.5 5 HIJK is a rectangle. Find the value of x and the length of each diagonal. 7. HJ = x and IK = 2x - 7 8. HJ = 3x + 7 and IK = 6x - 11 For each rhombus, (a) find the measures of the numbered angles, and then (b) find the area. 9. 10. 16 cm 29 9 cm L1 52 1 2 Practice 3 4 1 10 m 2 4 3 13 m Geometry Lesson 6-4 279