straight angle
An angle that forms a straight line has an angular measure of 180 degrees.
An angle of 180° is a straight line.
180 degrees
The only angle that can measure 180 degrees is a straight line.
An angle of 180 degrees is a straight line.
straight angle or line.
a line
That is a straight line.
180 degrees
It is: 180-exterior angle = interior angle because there are 180 degrees on a straight line
straight angle
It is called a straight angle.