A line segment's length is restricted by its endpoints
...segment
A ray
Right angle and rectangle are geometric terms.
I am going to say a line segment. No segments is a line, and one endpoint is a ray.
A defined line segment has endpoints.
segment
A line segment's length is restricted by its endpoints
...segment
A ray
A triangle
Right angle and rectangle are geometric terms.
An arc is a part of a circle that is defined by its endpoints. It is a segment of the circumference of the circle.
I am going to say a line segment. No segments is a line, and one endpoint is a ray.
A chord or its radius
curve
In geometric terms it is still a cube. Its volume is 1 cubic metre (which is 1000 litres).