Question

Two line segments with common end points form an ________ .

Answer 1

Line:

The line connects the two distinct points, and it can be extended from the points $\mathrm{P}$ or $\mathrm{Q}$.

Line segment:

A line with two distinct points under the constraint condition is called a segment.
Here, $\mathrm{PQ}$ is the line segment.

Angle:

Two lines with common end points form an angle.

Construct two line segments $\mathrm{PQ}$ and $\mathrm{PR}$.

Therefore, the two line segments $\mathrm{PQ}$ and $\mathrm{PR}$ with the common point $\mathrm{P}$, forms an angle $\mathrm{\theta }$.

Hence, two line segments with common end points form an angle.