- equality of measure.
- equal growth rates in two parts of a developing organism.
- equality with respect to height above sea level.
- a function from one metric space onto a second metric space having the property that the distance between two points in the first space is equal to the distance between the image points in the second space.
- rigid motion of a plane or space such that the distance between any two points before and after this motion is unaltered
- equality of height above sea level
