4th Grade Lines of Symmetry Worksheet (PDF)
This grade 4 symmetry worksheet for 4th Grade covers lines of symmetry (Common Core 4.G.A.3), with a free PDF to print.
These 20 problems practice finding and counting lines of symmetry in polygons, letters, and everyday objects. You will also complete a symmetric figure. They match Common Core 4.G.A.3.
Fold paper copies of the shapes to check your answers. The last six problems are word problems about butterflies, road signs, words, flags, and folding a square.
Grade 4 · Common Core State Standards: 4.G.A.3
Grade 4 symmetry worksheet: exercises 1 to 10
Exercise 1 – Is it symmetric?
Exercise 2 – Square
Exercise 3 – Rectangle
Exercise 4 – Equilateral triangle
Exercise 5 – Isosceles triangle
Exercise 6 – Slanted parallelogram
Exercise 7 – Vertical lines in letters
Exercise 8 – Horizontal lines in letters
Exercise 9 – Letters with no lines
Exercise 10 – Regular pentagon
Exercises 11 and up
Exercise 11 – Regular hexagon
Exercise 12 – Circle
Exercise 13 – Complete the shape
Exercise 14 – Sort the shapes
| Shape | Lines of symmetry |
|---|---|
| Rhombus that is not a square | ? |
| Kite | ? |
| Regular octagon | ? |
| Triangle with three different side lengths | ? |
Exercise 15 – Stop sign
Exercise 16 – Butterfly spots
Exercise 17 – Road signs
Exercise 18 – Words with symmetry
Exercise 19 – Flag stripes
Exercise 20 – Folding a square
Key facts behind this grade 4 symmetry worksheet
- A line of symmetry splits a figure into two matching halves.
- A square has 4 lines of symmetry, a rectangle has 2, and an equilateral triangle has 3.
- A regular polygon with n sides has n lines of symmetry.
- Some figures, like a slanted parallelogram, have no lines of symmetry.
- Check by folding: the edges and corners must line up exactly.
How to use this grade 4 symmetry worksheet
Work through the exercises in order: they go from simple to challenging. Write every step on paper, then compare with the solutions page and redo any exercise you missed the next day.
Download the grade 4 symmetry worksheet as a PDF with the button below and keep it with your notes.
All Grade 4 chapters: Grade 4 math.
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