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Read the information and complete the activities. When you finish, print this page and place it in your folder.
A circle is measured in units called degrees. (Let's not go into why at this point.You can visit the sites I listed below if you want to explore more about angles.)
The entire circle is 360 degrees. Half a circle is 180 degrees, and one quarter (1/4) of a circle is 90 degrees.
We use the symbol ° for degrees. A half circle of rotation is 180° and a quarter circle 90° and so on. Can you calculate the number of degrees in 1/3 of a rotation? Here is how to think about it. We know that ...
1 rotation = 360°
1/3 rotation = 360°/3=120°.
A full rotation is a full turn around the circle. Fill in the boxes below.
1 full rotation is 360°
Links to visit! Click on the links and find out more about angles and degrees!
http://www.thursdaysclassroom.com/13oct00/Act4hands.html - Practice measuring degrees in the sky!
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