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Lines of Symmetry in Shapes is a free printable Grade 4 maths worksheet on counting lines of symmetry, aligned to Common Core standard 4.G.A.3. It prints 6 questions with an answer key on its own sheet of paper, in 25 versions, 22 of them with different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 1 of 25 · the same problems every time you open this link.

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One paper per pupil

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22 of these 25 sets ask different questions — this skill does not have 25 questions to give. The rest reorder them, so no two pupils have the same paper in front of them.

Lines of Symmetry in Shapes

4.G.A.3

NameDate

Answer each question.

1.How many lines of symmetry does a isosceles triangle have?
2.How many lines of symmetry does a rectangle have?
3.How many lines of symmetry does a equilateral triangle have?
4.How many lines of symmetry does a square have?
5.How many lines of symmetry does a rhombus have?
6.How many lines of symmetry does a regular pentagon have?

LessonPrint · 4.G.A.3 · Set 1 · free to copy for classroom use

Answer key — Lines of Symmetry in Shapes

Set 1. Prints on its own sheet.

  1. 1.1
  2. 2.2
  3. 3.3
  4. 4.4
  5. 5.2
  6. 6.5

Questions about Lines of Symmetry in Shapes

What does the Lines of Symmetry in Shapes worksheet cover?

It practises counting lines of symmetry — 6 questions for Grade 4, all on Common Core 4.G.A.3: Find lines of symmetry. The instruction to pupils is “Answer each question”, and the answer key follows on the next sheet.

Which Common Core standard does Lines of Symmetry in Shapes practise?

CCSS.MATH.CONTENT.4.G.A.3 — 4.G.A.3, in the Geometry domain for Grade 4. The published standard reads: “Recognize a line of symmetry for a two-dimensional figure. Identify line-symmetric figures and draw lines of symmetry.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Lines of Symmetry in Shapes is written for Grade 4, typically ages 9-10. It is one of the sheets on 4.G.A.3, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Lines of Symmetry in Shapes come with an answer key?

Yes. All 6 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Lines of Symmetry in Shapes can I print?

25 versions, of which 22 ask genuinely different questions — this skill does not have 25 distinct questions to give, so the rest reorder them and no two pupils still share a paper. Set 1 downloads all 25 as one PDF.

Is Lines of Symmetry in Shapes free to print and photocopy?

Yes. Lines of Symmetry in Shapes, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

Is there a lesson plan to teach 4.G.A.3?

Yes — “Lines of Symmetry” is a 50-minute Grade 4 plan for 4.G.A.3, timed section by section, with the misconceptions to expect and an exit ticket. Lines of Symmetry in Shapes is the practice that follows it.

More practice for 4.G.A.3

Find lines of symmetry.

Teaching this next? Lines of Symmetry is the 50-minute plan for it, with the misconceptions to expect.

All Grade 4 worksheets

Last reviewed 2026-09-05. Aligned to 4.G.A.3 of the Common Core State Standards for mathematics.