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Chapter 1 - Essentials of Geometry Section 1.4 - Measure and classify angles What the student should get from this: 1. Name and classify angles 2. Measure and construct angles and angle bisectors What始s an angle?

A B

1

Name the angle -

(interior)

(exterior) C

How many angles do you see?

Classify angles: Acute" "

"

Right"

"

Obtuse""

"

"

Straight

x

0 < x < 90

x = 180 x = 90

90 < x < 180


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