Example: The examination of symmetry in uppercase letters: F has no lines of symmetry, A has one line of symmetry, and H has two lines of symmetry.

Highlight: A regular hexagon demonstrates multiple lines of symmetry, specifically six lines.

Definition: A line of symmetry is a line that divides a shape into two identical halves that match exactly when folded.

Definition: Rotational symmetry occurs when an object can be rotated by a certain amount and still appear the same as its starting position.

Example: A playing card demonstrates rotational symmetry of order 2, meaning it looks the same twice during a complete 360° rotation.

Vocabulary: Order of rotational symmetry - the number of times a shape looks exactly the same during one complete 360° rotation.