CK-12 Geometry-Concepts

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

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/52591

CK-12 Foundation: Chapter1ComplementaryAnglesB

Vocabulary

Two angles arecomplementarywhen they add up to 90◦.

Guided Practice

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

1. 45◦


2. 82◦


3. 19◦
   4.z◦

Answers:

1. 45◦


2. 8◦


3. 71◦


4. 90−z◦

Interactive Practice

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/113040

Explore More

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

1. 3◦


2. 82◦


3. 51◦


4. 30◦


5. 22◦
   6.(x+y)◦