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      • The line that divides the object into its identical halves is called the line of symmetry. For example, in the given image, the line passing through the middle of the flower is its line of symmetry.
      www.splashlearn.com/math-vocabulary/geometry/line-of-symmetry
  1. A line of symmetry is the line that divides a shape or an object into two equal and symmetrical parts. We also call this line the axis of symmetry or mirror line because it divides the figure symmetrically, and the divided parts look like mirror reflections of each other.

  2. Oct 29, 2018 · What is Symmetry? First, we need to understand a mathematical definition of symmetry. One way to think of line symmetry is as a mirror image. In other words, one side of the line of symmetry is an exact mirror image, or reflection, of the other side.

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  3. Oct 31, 2018 · A huge list of ways to play and explore symmetry for kids. You'll find hands on examples, fun art projects, printables and books to make it come alive.

  4. There are three lines of symmetry, namely the horizontal line of symmetry, the vertical line of symmetry, and the diagonal line of symmetry. How many lines of symmetry does a circle have? A circle can be divided into two identical halves by folding it along its diameter.

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    • Making Loose Parts Faces. Babies and toddlers begin to understand symmetry by looking at faces. A face is usually a reasonably symmetrical thing, and we come to ‘know’ this even though children couldn’t put it into words often.
    • Using Geoboards. Geoboards are fantastic for all sorts of learning in the early years, including teaching symmetry. You can buy geoboards, or you can easily make them yourself using pieces of wood with screws inserted into them.
    • Making Models. This is another really natural and simple activity, that children often bring an element of symmetry into already without any adult intervention.
    • Mirror Books. These are one of my ultimate favorite resources! To make a mirror-book you simply need two thin mirrors that you tape together so that they form a right-angle.
  5. Examples. Above are two examples of two shapes with their lines of symmetry. It's also important to note that some shapes can have multiple lines of symmetry. A line of symmetry can also be called a 'mirror line' as a mirror can be placed along it and the reflection would show the entire shape.

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  7. A 2D shape is symmetrical if a line can be drawn through it and either side is a reflection of the other. You would call this the line of symmetry.

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