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angle addition postulate.notebook
September 23, 2015
Agenda:
• What do you know about angles?
• Angle vocabulary
• Naming angles
• Angle Addition Postulate
Sep 23­8:33 AM
What do you know about angles?
Sep 23­8:35 AM
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angle addition postulate.notebook
September 23, 2015
Angle Vocabulary:
Angles
"Two rays that meet at a point and extend indefinitely form an angle.
The two rays are the sides of the angle. The point at which they meet is
the vertex." ­ C­Scope, All About Angles
"An angle is a figure formed by two rays, or sides, with a common endpoint
called the vertex (plural: vertices)." ­ Holt Geometry, Page 20
Sep 23­8:40 AM
Angles are measured in degrees using a protractor.
Naming Angles:
Angles can be named in three ways:
You can name it by the point that is its vertex (if it is the only angle that uses that point as a vertex)
You can name it by a point on each line and the vertex, with the vertex in middle.
You can name it by a number. Sep 23­8:44 AM
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angle addition postulate.notebook
September 23, 2015
Angle Addition Postulate
Sep 23­8:47 AM
Angle Addition postulate Examples using algebra.
http://study.com/academy/practice/quiz­worksheet­angle­addition­postulate.jpg
Sep 23­8:49 AM
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angle addition postulate.notebook
September 23, 2015
Sep 23­10:40 AM
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