Definitions [3]
Definition: Symmetry
Symmetry means that one half of an object is an exact mirror image of the other half. If you could fold the object and both halves match perfectly, then it has symmetry.
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Mirror line mm′ = Line of Symmetry
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Object (F) and its image (F′) are equal distances from the line
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When folded along this line, both parts match exactly
Definition: Line of Symmetry
A line of symmetry is an imaginary line that divides a shape into two identical halves. Each half is the mirror image of the other.
Some shapes, like a square, have more than one line of symmetry.
Definition: Net
A net is a two-dimensional (2D) pattern that, when folded along its edges, forms a three-dimensional (3D) solid shape.
