To measure an angle: # Align the bottom line of the protractor with one ray of the angle being measured. # Center the central point along the bottom of the protractor with the junction of the angle being measured. # Find where the other ray of the angle crosses the rounded part of the protractor. The numbered mark at which it crosses is the number of degrees of the angle being measured.
A protractor is a circular or semi circular instrument for measuring angles and some have existed from ancient times. A half circular protractor is marked for 180 degrees and a full circle for 360 degrees. Protractors usually have two sets of numbers going in opposite directions, so be careful which side you use. When in doubt you should ask yourself is the angle greater or smaller that 90 degrees.
To measure an angle: # Align the bottom line of the protractor with one ray of the angle being measured. # Center the central point along the bottom of the protractor with the junction of the angle being measured. # Find where the other ray of the angle crosses the rounded part of the protractor. The numbered mark at which it crosses is the number of degrees of the angle being measured.
A degree is the measure of an angle.
A protractor is a circular or semi circular instrument for measuring angles and some have existed from ancient times. A half circular protractor is marked for 180 degrees and a full circle for 360 degrees. Protractors usually have two sets of numbers going in opposite directions, so be careful which side you use. When in doubt you should ask yourself is the angle greater or smaller that 90 degrees.