Definition:Bilateral Symmetry/Axis

Definition

Let $F$ be a plane geometric figure.

Let $\map R F$ be a reflection in an axis of reflection $AB$ which is a symmetry.

Then $AB$ is referred to as an axis of symmetry of $F$.

Sources

• 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): axis of symmetry
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): axis: 2. (axis of symmetry)
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): axis: 2. (axis of symmetry)
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): axis of symmetry