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Constructing angles review

Review constructing angles with a protractor, then try constructing some of your own.

Constructing angles

We can use a protractor to help us construct an angle of a given amount of degrees.
Example
Construct a 65, degrees angle.
To make a 65, degrees angle, we move the middle dot of the protractor to the vertex (where the 2 rays connect) of the angle.
A protractor shows points plotted at 160 and 180 degrees. Rays go out from a vertex at the protractor's center and through each point.
Next, we line up one of the rays on the 0, degrees line of the protractor.
A protractor shows points plotted at 0 and 180 degrees. Rays go out from a vertex at the protractor's center and through each point.
We then move the other ray around until it is lined up with the 65, degrees measurement on the protractor.
A protractor shows points plotted at 0 and 65 degrees. Rays go out from a vertex at the protractor's center and through each point.
The angle will look like this when the measurement is 65, degrees. Note: The angle can be rotated in any direction, but the angle between the two rays must look like this.
An angle is formed by two rays extending out from a common point. The size of the angle is the same as in the previous image.
Want to learn more about constructing angles? Check out this video.

Practice

Problem 1
Construct a 40, degrees angle.

Want to try more problems like this? Check out this exercise.

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