An example of geometry is the calculation of a triangle's angles.
Origin of geometry
- Middle English geometrie from Old French from Latin geōmetria from Greek geōmetriā from geōmetrein to measure land geō- geo- metron measure mē-2 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Old French géométrie, from Latin geometria, from Ancient Greek γεωμετρία (geometría, “geometry, land-survey”), from γεωμετρέω (geometréo, “to practice or to profess geometry, to measure, to survey land”), back-formation from γεωμέτρης (geométrēs, “land measurer”), from γῆ (gē, “earth, land, country”) + μετρέω (metréō, “to measure, to count”) or -μετρία (-metria, “measurement”), from μέτρον (metron, “a measure”).