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Grade 4 Math · Lines, Angles and Symmetry

Grade 4 Lines, Angles and Symmetry Practice Test

Build Grade 4 Math skills with five 10-question practice tests on lines, rays, line segments, angle types, parallel and perpendicular lines, and symmetry.

Lines, Angles and Symmetry Practice Tests

These Grade 4 Math practice tests help students identify lines, line segments, rays, angle types, and relationships between lines. Students also use lines of symmetry to describe matching halves of shapes.

Skills covered

  • Identifying lines, rays, and line segments
  • Recognizing parallel, intersecting, and perpendicular lines
  • Classifying acute, right, obtuse, and straight angles
  • Using angle measures in degrees
  • Finding lines of symmetry in shapes
  • Applying geometry vocabulary to real-world examples

How to use these practice tests

A line extends forever in both directions, a ray has one endpoint, and a line segment has two endpoints. An acute angle is less than 90 degrees, a right angle is 90 degrees, an obtuse angle is between 90 and 180 degrees, and a straight angle is 180 degrees. A line of symmetry divides a shape into matching mirror halves.

For more Grade 4 Math practice, return to the Grade 4 Math category.

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Grade 4 Lines, Angles and Symmetry Practice Tests

A 10-question Grade 4 Math practice test on lines, line segments, rays, angle types, parallel and perpendicular lines, and symmetry.

Identify the geometric figure or property, use angle measures when provided, and apply the definition of symmetry.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What does a line of symmetry do to a shape?

Please select an answer first.

Correct answer: A

The correct answer is It divides the shape into matching mirror halves.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: A line of symmetry divides a shape into two halves that match when reflected or folded.
  3. Check the choice: The correct choice is It divides the shape into matching mirror halves.

A line of symmetry divides a shape into two halves that match when reflected or folded.

2. QuestionMultiple choice

How many lines of symmetry does a square have?

Please select an answer first.

Correct answer: B

The correct answer is 4.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: A square has two horizontal or vertical symmetry lines and two diagonal symmetry lines, for 4 total.
  3. Check the choice: The correct choice is 4.

A square has two horizontal or vertical symmetry lines and two diagonal symmetry lines, for 4 total.

3. QuestionMultiple choice

How many lines of symmetry does a rectangle that is not a square have?

Please select an answer first.

Correct answer: C

The correct answer is 2.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: A non-square rectangle has one horizontal and one vertical line of symmetry.
  3. Check the choice: The correct choice is 2.

A non-square rectangle has one horizontal and one vertical line of symmetry.

4. QuestionMultiple choice

How many lines of symmetry does an equilateral triangle have?

Please select an answer first.

Correct answer: D

The correct answer is 3.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: Each altitude of an equilateral triangle is a line of symmetry, giving 3 lines.
  3. Check the choice: The correct choice is 3.

Each altitude of an equilateral triangle is a line of symmetry, giving 3 lines.

5. QuestionMultiple choice

How many lines of symmetry does a circle have?

Please select an answer first.

Correct answer: A

The correct answer is Infinitely many.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: Every diameter of a circle creates matching halves, so a circle has infinitely many lines of symmetry.
  3. Check the choice: The correct choice is Infinitely many.

Every diameter of a circle creates matching halves, so a circle has infinitely many lines of symmetry.

6. QuestionMultiple choice

How many lines of symmetry does a typical isosceles triangle have?

Please select an answer first.

Correct answer: B

The correct answer is 1.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: An isosceles triangle has one line of symmetry through its top vertex and the midpoint of its base.
  3. Check the choice: The correct choice is 1.

An isosceles triangle has one line of symmetry through its top vertex and the midpoint of its base.

7. QuestionMultiple choice

Which condition shows that a shape has line symmetry?

Please select an answer first.

Correct answer: C

The correct answer is The two halves match exactly when folded.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: Matching halves after a fold show that the fold line is a line of symmetry.
  3. Check the choice: The correct choice is The two halves match exactly when folded.

Matching halves after a fold show that the fold line is a line of symmetry.

8. QuestionMultiple choice

Which shape usually has no line of symmetry?

Please select an answer first.

Correct answer: D

The correct answer is A scalene triangle.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: A scalene triangle has no equal sides or matching halves, so it usually has no line of symmetry.
  3. Check the choice: The correct choice is A scalene triangle.

A scalene triangle has no equal sides or matching halves, so it usually has no line of symmetry.

9. QuestionMultiple choice

Can a diagonal of a square be a line of symmetry?

Please select an answer first.

Correct answer: A

The correct answer is Yes, it divides the square into matching halves.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: Either diagonal of a square divides it into two matching triangular halves.
  3. Check the choice: The correct choice is Yes, it divides the square into matching halves.

Either diagonal of a square divides it into two matching triangular halves.

10. QuestionMultiple choice

How many lines of symmetry does a non-square rectangle have?

Please select an answer first.

Correct answer: B

The correct answer is 2.

  1. Identify the figure: Look for endpoints, arrows, intersections, angle measures, or matching halves.
  2. Use the geometry rule: A non-square rectangle is symmetric across its horizontal and vertical center lines.
  3. Check the choice: The correct choice is 2.

A non-square rectangle is symmetric across its horizontal and vertical center lines.

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Frequently asked questions about Grade 4 Lines, Angles and Symmetry

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

A line extends forever in both directions, a ray has one endpoint and extends forever in one direction, and a line segment has two endpoints.

What is a line of symmetry?

A line of symmetry divides a shape into two matching mirror halves when the shape is folded along that line.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 4 Lines, Angles and Symmetry questions in total.