Place the center on the vertex, rotate your protractor until the base line is lined up with one of the lines of the angle and read the number the other line goes through.
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Use a protractor.Use a protractor.Use a protractor.Use a protractor.
A protractor.
There are three angles in a triangle but to measure them you would use a protractor.
A protractor is used to measure angles.
it depends on the angle. Right angles always have 90 degrees. You can use a protractor to measure the angle