# Isometry

## Isometry

Geometric transformation that preserves the measures of the figures (lengths, angles) or distances.

The word isometry also refers to the property of that which is isometric. We can determine the isometry of two figures by examining the measures of their sides and their corresponding angles.

### Properties

• The expression negative isometry is a synonym for opposite isometry or flip.
• The expression positive isometry is a synonym for direct isometry.