CK-12 Geometry-Concepts

http://www.ck12.org Chapter 1. Basics of Geometry

Guided Practice

Find the measure of an angle that is supplementary to^6 ABCifm^6 ABCis

1. 45◦


2. 118◦


3. 32◦

4.x◦

Answers:

1. 135◦


2. 62◦


3. 148◦


4. 180−x◦

Interactive Practice

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Find the measure of an angle that is supplementary to^6 ABCifm^6 ABCis:

1. 112◦

2. 15◦

3. 97◦

4. 81◦

5. 57◦

6.(x−y)◦

7.(x+y)◦

Use the diagram below for exercises 8-9. Note thatNK⊥

←→

IL.

8. Name another pair of supplementary angles.