Line, ray segment, and angle

Front

What is a line?

Back

A line is straight and extends in both directions forever.

Front

What is a ray?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

Identify the image: Ray JP or Ray PJ?

Back

Ray JP starts at point J and extends infinitely through point P.

Front

Identify the image: Line JP or Line PJ?

Back

Line JP and Line PJ are the same; they extend infinitely in both directions.

Front

What is the midpoint of a line segment?

Back

The midpoint of a line segment is the point that divides it into two equal parts.

Front

How do you find the midpoint of two points (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2).

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints.

Front

What is the notation for a ray?

Back

A ray is denoted by two points, with the first point being the endpoint, e.g., Ray AB.

Front

If point A is at (1,2) and point B is at (3,4), what is the midpoint?

Back

Midpoint = ((1+3)/2, (2+4)/2) = (2, 3).