Lines
This is the number of interior angles a quadrilateral has.
What is 4?
The measurement of the three angles inside a triangle add up to this many degrees.
What is: 180 degrees?
The part of a line with one end point, but goes on forever in the other direction, is called this.
What is a ray?
A quadrilateral has four interior angles that together add up to this many degrees.
What is: 360 degrees?