# Lines

Contents

Learn what lines, line segments, and rays are and how to use them.

8 exercises available

Let's draw points, lines, line segments, and rays. We'll also think about perpendicular and parallel lines and identify these in two-dimensional figures. Common Core Standard: 4.G.A.1

Using a number line, let's learn how we measure segments.

Learn the definitions of "parallel" and "perpendicular".

Extending thinking from points and lines (1 and 2 dimensions) to planes (3 dimensions).

Consider how precise definitions of geometry terms are like angle, circle, parallel lines, and a few others.