Symmetry (Line Symmetry)
Related Pages
Line Symmetry
Shape and Symmetry Games
More Grade 1 Lessons
These lessons help Grade 1 kids learn about line symmetry, with video lessons, examples, stories, activities and songs.
Line Symmetry
These introductory lessons on symmetry help to make you aware of symmetry all around us.
Imagine you have a picture or an object, and you could draw a line right through the middle of it. If you were to fold the picture along that line, and both halves matched up perfectly, then that picture has line symmetry.
The line you fold it on is called the line of symmetry (or sometimes a “mirror line” because one side looks like a reflection of the other).
The following figures show the lines of symmetry for the alphabets. Scroll down the page for more examples and solutions of lines of symmetry for different types of figures.
Geometry Worksheets
Practice your skills with the following worksheets:
Printable & Online Geometry Worksheets
What is symmetry?
A line of symmetry is an imaginary line that divides a figure in half.
If you fold a figure along a line of symmetry, both sides match.
Symmetry is found in nature, in art, in common objects, in letters and more.
Symmetry is also referred to as mirror image.
Line of Symmetry
This video gives a definition of line symmetry and asks students to identify it within several images.
What is line symmetry?
A shape has line symmetry when one half is the mirror image of the other half. The fold
line or mirror line is called the line of symmetry. The line may appear vertically,
horizontally or diagonally. Shapes may have multiple lines of symmetry or no lines of symmetry.
Rocket Symmetry Song
A song to help you remember line symmetry.
Lyrics:
Take a shape and you can see
If it has a line of symmetry
When you try folding it
Matching halves are going to fit
Learn Math Online - Symmetry
Short video for kids describing mirror symmetry.
Symmetry means one side is the same as the other.
Introduction to Symmetry
A shape has symmetry when one-half of a shape is a mirror image of the other. We will
look at the symmetry of some of the capital letters of the alphabet.
Lines of Symmetry
This video shows how to find the lines of symmetry in different figures.
All About Symmetry for Kids
How to Check for Line Symmetry (Fun Activities for Grade 1):
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The Folding Test:
Give kids shapes cut out of paper (like a square, a rectangle, a triangle, a heart, a letter A, a letter S).
Ask them: “Can you fold this shape in half so that both sides match perfectly?"
If they can, have them draw the “folding line” with a crayon. That’s the line of symmetry! -
The Mirror Test:
Use a small, child-safe mirror.
Place the mirror on different parts of a picture (like a butterfly or a drawing of a house).
Ask: “Does the picture look complete and the same on both sides of the mirror?” If it does, the mirror is on a line of symmetry. -
Fold a piece of paper in half.
Draw half of a shape along the folded edge (like half a heart, half a star). Cut it out while the paper is still folded.
When they open it, they’ll see a perfectly symmetrical shape!
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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