Lines, Rays and Line Segments Worksheets for 4th Grade

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Grade 4MathMeasurement & GeometryCCSS 4.G.A.1

Skill: Identifying and naming lines, rays and line segments using their points

Preview of the Lines, Rays and Line Segments printable worksheet
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Teaching tips and what to try next

Suited to fourth graders starting the geometry unit, often right before angles. Children often mix up rays and segments when an arrowhead is small, so have them trace each end with a finger and say "stops" or "keeps going." Angles are built from two rays, which leads straight into Classify Angles: Acute, Right or Obtuse.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

Lines, rays and line segments are the building blocks of geometry. A line goes on forever in both directions, a ray starts at one point and goes on forever in one direction, and a line segment has two endpoints. Fourth graders are expected to draw and identify these figures, and this fourth grade worksheet focuses on telling them apart and naming them correctly.

The page shows twelve figures, four of each kind, drawn at different angles and lengths. Each figure passes through two points labeled with capital letters. Arrowheads show where a figure keeps going, and dots show endpoints. Children write what each figure is and name it with its points, such as line CD, ray EF or line segment AB. A short reminder box at the top shows the three figures side by side. Each of the ten versions has new figures and its own answer key.

How to use it: before starting, ask your child to explain the difference between an arrowhead and a dot. The key rule for naming a ray is that the endpoint comes first, so a ray that starts at G and passes through H is ray GH, not ray HG. Lines and segments can be named in either order, but the answer key uses the order shown on the page. Have your child trace each figure with a finger and say what happens at each end.

The answer key names every figure. For the next step in geometry, try our Classify Angles: Acute, Right or Obtuse worksheet. For more work with points, try our Graphing Points on a Coordinate Plane worksheet.