obtuse
obtuse
Obtuse angle
right angle
An angle that forms a straight line has an angular measure of 180 degrees.
right angle
straight angle
An angle is formed by two rays that have the same endpoint. Tell why it makes sense that a straight angle forms a straight line.
No. It forms the angle and so is neither in the interior nor the exterior.
It forms an angle
that is an right angle
It is called an arm of the angle.
90 degrees90 degrees