Identifying Angles
What is an acute angle
Divide a 60 degree angle into 3 equal parts
What is 20 degrees each
2/5 x 4/9
8/45
9/10 divided by 1/3
27/10
See angle picture #1
What is 40 degrees
An angle that measures 130 degrees?
What is an obtuse angle?
Divide a 90 degree angle into two equal parts
What is 45 degrees each
2/3 x 1/5
2/15
1/6 divided by 2/10
10/12
See angle picture #2
What is 40 degrees
An angle that measures 89 degrees
What is an acute angle?
Divide a 120 degree angle into 4 equal parts
What is 30 degrees each
6/8 x 3/9
18/72
1/7 divided by 2/10
10/14
See angle picture #3
What is 160 degrees
An angle that measures 90 degrees
What is a right angle?
Divide a 140 degree angle into 2 equal parts
12/12 x 2/3
24/36
1/4 divided by 5/6
6/20
See angle picture #4
What is 90 degrees
An angle that measures 180 degrees
What is a straight angle
Divide a 180 degree angle into 12 equal parts
What is 15 degrees each
10/11 x 10/11
100/121
6/9 divided by 8/9
54/72
See angle picture #5
What is 110 degrees