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.
It depends on what the measures relate to: lengths of sides, interior angles, exterior angles, ...
The sum of the measures of the interior angles of a heptagon is 900 degrees.
50°, 130°, and 50° are.
They are equal (or 'congruent') angles.
complementary angles measures add to 90 and supplementary angles measures add to 180. Whether they are next to each other or not does not matter.
The instrument for measuring the angles of a triangle is called a protractor.
A protractor is one such instrument. Navigational aides that do the same include compasses and sextants.
Azimuth
A protractor measures the degree of angles and circles.
congruent angles
Supplementary angles are 2 angles whose measures = 180o.
Two angles are complementary if the sum of their measures is 90 degrees.Two angles are supplementary if the sum of their measures is 180 degrees.
Two angles are complementary if the sum of their measures is 90 degrees.Two angles are supplementary if the sum of their measures is 180 degrees.
63,117,117
Measures of what? The interior angles, the exterior angles, the lengths of sides?
In a triangle, the sum of the measures of the angles is 180 degrees.
SUPPLEMENTARY ANGLES are two angles the sum of whose measures is 180 degrees.