Reteaching (continued) 1-5 Exploring Pairs Supplementary Angles and Complementary Angles Two angles that form a line are supplementary angles. Another term for these angles is a linear pair. However, any two angles with measures that sum to 180 are also considered supplementary angles. In both figures below, = 120 and = 60, so 1 m1 m2 and 2 are supplementary. Two angles that form a right angle are complementary angles. However, any two angles with measures that sum to 90 are also considered complementary angles. In both figures below, = 60 and = 30, so 1 and 2 are complementary. m1 m2 Exercises Copy the diagram at the right. 3. Label as 1. a. ABD Label an angle that is supplementary to as 2. b. ABD Label as 3 an angle that is adjacent and complementary to c. ABD. Label as 4 a second angle that is d. complementary to ABD. Name an angle that is supplementary to e. ABE. Name an angle that is complementary to f. EBF. Prentice Hall Geometry Teaching Resources • Copyright © by Pearson Education, Inc., or its affiliates. All Rights Reserved. 50
Reteaching (continued) 1-5 Exploring Pairs Supplementary Angles and Complementary Angles Two angles that form a line are supplementary angles. Another term for these angles is a linear pair. However, any two angles with measures that sum to 180 are also considered supplementary angles. In both figures below, m1 = 120 and m2 = 60, so 1 and 2 are supplementary. Two angles that form a right angle are complementary angles. However, any two angles with measures that sum to 90 are also considered complementary angles. In both figures below, m1 = 60 and m2 = 30, so 1 and 2 are complementary. Exercises 3. Copy the diagram at the right. a. Label ABD as 1. b. Label an angle that is supplementary to ABD as 2. c. Label as 3 an angle that is adjacent and complementary to ABD. d. Label as 4 a second angle that is complementary to ABD. e. Name an angle that is supplementary to ABE. f. Name an angle that is complementary to EBF. Prentice Hall Geometry • Teaching Resources Copyright © by Pearson Education, Inc., or its affiliates. All Rights Reserved. 50
Pearson_1.5_Reteaching_Worksheet.docx