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
The instrument used for measuring slope angles is called an inclinometer or clinometer. An inclinometer typically measures the angle of a slope relative to a horizontal plane, while a clinometer can also be used for measuring angles of elevation or depression. Both tools are essential in fields such as surveying, geology, and construction.
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.
An instrument that measures degrees is called a protractor. Protractors are primarily used in geometry to measure angles in degrees. They typically have a semicircular or circular shape, with markings that indicate the degree measurements from 0 to 180 degrees or 0 to 360 degrees, depending on the design. Other instruments, like theodolites, also measure angles in degrees, particularly in surveying and construction.
63,117,117
Measures of what? The interior angles, the exterior angles, the lengths of sides?