They form a vertex because they are line segments. An angle is two rays with the same point
The point where the two line segments meet
When two line segments meet at a point
When two line segments meet at a point
They are perpendicular line segments
straight angle
no since they won't ever meet.
It is important to know terminology when learning math. The Vertex is the point where two lines meet and form and angle.
An angle comprises two straight line segments or rays together with the point at which they meet.
vertex
the vertex
You are a vertex