What are rigid motions and what are their three types?

Conditions

• Applies to geometric transformations.

Reasoning, step by step

1. Define rigid motions as transformations that keep the same size and shape.
2. List the three types: translations, reflections, and rotations.

Example

The video states: 'Rigid motions are defined as transformations that preserve the exact size and shape of an object, although its position may change. The three types of rigid motions are listed: translations, reflections, and rotations.'

Common misconceptions

• Believing that dilations or stretching/shrinking are rigid motions.

Watch the explanation

Explore next

• How do you translate a shape on a coordinate plane?
• Are dilations considered rigid motions?