Practice and Revision - Symmetry (Including Constructions on Symmetry)

Core concept

Line symmetry means a shape can be folded along a line so both halves match exactly, like a butterfly's wings.

How it works

Some shapes have multiple lines of symmetry, like a square (4 lines), while others have none, like an irregular shape.

Why it matters

Rotational symmetry means a shape looks the same after being rotated less than a full turn, like a pinwheel or certain flowers.

Key detail

Understanding symmetry helps us appreciate patterns in nature, art, and architecture, and construct symmetrical designs accurately.