"isometry." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/isometry>.
isometry. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/isometry
Equality of measure.
Equality of elevation above sea level.
A function between two metric spaces (such as two coordinate systems) which preserves distances. A rotation or translation in a plane is an isometry, since the distances between two points on the plane remain the same after the rotation or translation.