Types of lines

Front

What are parallel lines?

Back

Lines that never meet and are always the same distance apart.

Front

What are intersecting lines?

Back

Lines that cross each other at one point.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is geometric notation for a line segment between points J and K?

Back

Front

What is geometric notation for a line that extends infinitely in both directions through points J and K?

Back

@@ ightarrow JK@@.

Front

What is geometric notation for a ray starting at point J and passing through point K?

Back

@@ ightarrow KJ@@.

Front

How do you identify parallel lines in a diagram?

Back

Look for lines that are equidistant and never intersect.

Front

How do you identify intersecting lines in a diagram?

Back

Look for lines that cross each other at any angle.

Front

How do you identify perpendicular lines in a diagram?

Back

Look for lines that meet at a right angle (90 degrees).