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# Exercise 1.1 (Complementary and Supplementary Angles)

Write the measures of the complementary, supplementary angles of the following angles

Exercise 1.1

1. Write the measures of the complementary angles of the following angles

i) 45°

Complementary angle of 45° = 90° − 45° = 45°

ii) 30°

Complementary angle of 30° = 90° − 30° = 60°

iii) 72°

Complementary angle of 72° = 90° − 72° = 18°

iv) 88°

Complementary angle of 88° = 90° − 88° = 2°

v) 38°

Complementary angle of 38° = 90° − 38° = 52°

2. Write the measures of the supplementary angles of the following angles

i) 80°

Supplementary angle of 80° = 180° − 80° = 100°

ii) 95°

Supplementary angle of 95° = 180° − 95° = 85°

iii) 110°

Supplementary angle of 110° = 180° −110° = 70°

iv) 135°

Supplementary angle of 135° = 180° − 135° = 45°

v) 150°

Supplementary angle of 150° = 180° −150° = 30°

Exercise 1.1

1. i) 45° ii) 60 ° iii) 18° iv) 2° v) 52°

2. i) 100° ii) 85 ° iii) 70° iv) 45° v) 30°

Tags : Geometry | Term 2 Chapter 1 | 5th Maths , 5th Maths : Term 2 Unit 1 : Geometry
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5th Maths : Term 2 Unit 1 : Geometry : Exercise 1.1 (Complementary and Supplementary Angles) | Geometry | Term 2 Chapter 1 | 5th Maths