Ninety Degrees
90°
it measures 360 degrees
A 'right angle' looks like a corner, and measures 90 degrees.
Spheres are measured with solid angles (which are like two dimensional angles). These angles can be measure with square degrees or steradians. A sphere measures 129300/π square degrees (or about 41,253 square degrees). A sphere measures 4π steradians (or about 12.566 steradians.)
There would be twelve angles in all: six each of two complementary measures (or 12 right angles).
90°
it measures 360 degrees
3 interior angles and each of them measures 60 degrees
Supplementary angles are 2 angles that add up to 180°. Complementary angles are 2 angles that add up to 90°.
A 'right angle' looks like a corner, and measures 90 degrees.
Spheres are measured with solid angles (which are like two dimensional angles). These angles can be measure with square degrees or steradians. A sphere measures 129300/π square degrees (or about 41,253 square degrees). A sphere measures 4π steradians (or about 12.566 steradians.)
A quadrilateral doesn't have degrees. It has four sides, four inside angles, four outside angles, a perimeter, and an area. If you add up the measures of all four outside angles, they add to 360 degrees. If you add up the measures of all four inside angles, they add to 360 degrees too.
There would be twelve angles in all: six each of two complementary measures (or 12 right angles).
13 sides
Each of the 3 angles measures 60 degrees. There are 180 degrees in a triangle.
22 sides
A rectangle has 4 interior angles each of which measures 90 degrees.