What Is a Straight Angle? (Mathematics Lesson)
What Is a Straight Angle?An straight angle is an angle of 180°.
Real Examples of Straight AnglesThe angles below are all straight angles:
Supplementary AnglesTwo angles are supplementary if they add up to a straight angle.
Read more about supplementary angles
NoteWHAT'S IN A NAME?
A straight angle is called straight because it forms a straight line.
DO A 180A straight angle is half a revolution, it changes the direction to point the other way.
The phrases "do a 180", "a complete 180" refers to someone who completely changes their mind or direction the other way.