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January 05, 2017
2017 HAPPY NEW YEAR!!
Phone Jail
Bathroom Passes - 3 max
Dress Code/Assembly
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Classifying Angles
Section 11.1
Learning Target:I can:- identify different types of angles. use the properties of angles to find missing measures.
Lesson...
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What is an angle?
Two rays that share the same endpoint form an angle. The point where the rays intersect is called the vertex of the angle. The two rays are called the sides of the angle.
The word angle comes from the Latin word angulus, meaning "a corner".
START THINKING
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Naming Angles
A
B
C
3
You have 3 options when naming angles:
1.
2.3.
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Degrees: measuring angles We measure the size of an angle using degrees. If a circle were divided up into 360 equal parts, each part would have a measure of 1 degree.
Here are some examples of angles and their degree measurements.
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acute obtuse right angle
Drag the label to the correct angle.
right angleobtuseacute
obtuse
acuteright angle
acute
obtuse
straight
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