two rays make up an angle, so the rays are the sides of the angle.
right angle
In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
The two rays that form an angle are called the legs or sides of the angle. The meeting point of the two rays that form an angle is called the vertex.
The angle is called the reflected angle.
straight angle
acute
An angle consists of two rays called sides with a common endpoint called the vertex.
is called a straight angle
An angle consists of two rays called sides with a common endpoint called the vertex.
straight angle
an angle