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🔺 4th grade math · Shapes & Space

Lines, rays and angles

A line has no endpoints. A ray has 1. A segment has 2. A point is one exact spot.

Worked example

What is this called?
Answer: ray
Look at the ends. It is a ray: a ray has one endpoint and goes on forever in one direction.

For grown-ups: Points, lines, rays, angles; parallel and perpendicular. Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.

  • CCSS 4.G.A.1
What this practises, for teachers

Practices points, lines, rays, angles; parallel and perpendicular (4.G.A.1). A printable sheet with its answer key, worked answers on the page, no accounts.

▶ Practise it

For your class

🖨️ Printable sheet and key

On the board with this skill:

Try three

  1. What is this called?
    Show the answer and how
    Answer: line
    Look at the ends. It is a line: a line goes on and on in both directions, with no endpoints.
  2. What is this called?
    Show the answer and how
    Answer: ray
    Look at the ends. It is a ray: a ray has one endpoint and goes on forever in one direction.
  3. How many endpoints does this have? (An endpoint is a dot where it stops.)
    Show the answer and how
    Answer: 0
    Look for the dots where it stops. A line has 0 endpoints: a line goes on and on in both directions, with no endpoints. Answer: 0.

Before and after

Learn first: Squares, rectangles, rhombuses (3rd)

Comes next: Angles, triangles, symmetry (4th)

Name: ____________________Date: ____________Score: ____ / 12

Lines, rays and angles (4th grade)

  1. Which picture shows a line segment? It has two endpoints.
    ABC
  2. What is this called?
  3. What is this called?
  4. Which picture shows a line? It has no endpoints.
    ABC
  5. What is this called?
    P
  6. Which picture shows a ray? It has exactly one endpoint.
    ABC
  7. What is this called?
  8. How many endpoints does this have? (An endpoint is a dot where it stops.)
  9. How many endpoints does this have? (An endpoint is a dot where it stops.)
  10. What is this called?
  11. How many endpoints does this have? (An endpoint is a dot where it stops.)
  12. Which picture shows a line? It has no endpoints.
    ABC

Answer key

  1. Picture C
  2. ray
  3. line
  4. Picture A
  5. point
  6. Picture A
  7. line segment
  8. 0
  9. 1
  10. line segment
  11. 0
  12. Picture C

More 4th grade skills: all 4th grade math skills, or every grade at math skills.