Angles are based on parts of a full turn, which is 360°. A quarter turn is 90° and is called a right angle. A half turn is 180° and is known as a straight angle (or angle on a straight line).
have four sides and four angles. Interior angles in a quadrilateral sum to a full turn (360Ëš). It's possible to demonstrate and prove mathematically that the angle sum of every triangle is 180 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback