Types of Angles
Angles in Circles
Name My Angle
Adding Fractions Review
100
What is a right angle?
An angle that measures exactly 90o
100
What are the 2 steps in determining a degree measurement found in a shaded part of a circle. (example below)
1. Divide 360o by the number of parts the circle has been split into.
2. Multiply the answer by how many parts are actually shaded.
100
90 degrees
What is a right angle?
100
2 5
_____ + ______
8 8
7
____
8
200
What is the difference between an acute and obtuse angle?
An acute angle measures less than 90o (<90o ) while an obtuse angle measures greater than 90o (>90o).
200
Determine the degree of ONE section of the shaded part of the FIRST image.
36o (acute)
200
179 degrees
Obtuse angle
200
6 8
_____ + ______
15 15
14
_____
15
300
Which shape has 3 acute angles?
300
Determine the degree measure of the shaded part below.
120o
300
89 degrees
What is an acute angle?
300
3 1
3 _____ + 5 ______
5 5
4
8 _____
5
400
Name the following 4 angles (right, obtuse, or acute)
Acute, Obtuse, Right, & Acute
400
Determine the degree measure of the shaded part below.
216o
400
93 degrees
What is an obtuse angle?
400
5 8
6 _____ + 7______
10 10
3
14 _____
10
500
A straight angle measures ________ degrees.
180 degrees
500
Determine the degree of the shaded part of the SECOND image
315o
500
180 degrees
Straight angle
500
3 65
2 _____ + 3 ______
10 100
95
5 _____
100