One possibility is a closed shape: a circle, ellipse, a closed wriggly shape.
An angle.
an Angle
An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle.
A figure formed by two rays that share a common endpoint is called an angle. The common endpoint is known as the vertex of the angle, while the two rays are referred to as the sides of the angle. Angles are typically measured in degrees or radians and can represent various geometric concepts.
acute
An angle.
It is an angle.
A figure that is made up of two noncollinear rays with a common endpoint is an angle. The angle that is formed can be acute, right, obtuse or reflex.
angle
an angle.
an angle
an Angle
An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle.
The meeting points of two rays is called a vertex
angle
An angle is the union of two rays with a common endpoint.
an angle is composed of two rays that have the same endpoint.