Reflection Symmetry

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What is Reflection Symmetry?

Back

Reflection symmetry is when one half of an object is a mirror image of the other half.

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Examples of Reflection Symmetry

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Human faces, butterfly wings, and the reflection of trees in water are examples of reflection symmetry.

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Lines of Symmetry in a Square

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A square has 4 lines of symmetry.

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Lines of Symmetry in a Rectangle

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A rectangle has 2 lines of symmetry.

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Property of Reflection Symmetry

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One half of a shape must reflect the other half, following lateral inversion.

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Mirror Line

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An object and its image are symmetrical with respect to its mirror line.

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How many lines of symmetry does a right triangle have?

Back

A right triangle has no lines of reflection symmetry.

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Reflection Symmetry in Nature

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Reflections of mountains in lakes are examples of reflection symmetry.

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Reflection Symmetry in Shapes

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A shape must have at least one line of symmetry to be considered as having reflection symmetry.

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Reflection Symmetry in a Leaf

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A leaf can be drawn on both sides of a line of symmetry, following lateral inversion.