geometry
/dʒiːˈɒmɪtɹi/noun
The area of mathematics concerned with shapes, sizes, and the relationships between points, lines, and surfaces.
Example sentences
- “We're studying triangles and circles in geometry this term.”
- “Architects use geometry to calculate angles and areas in their designs.”
Beyond math class, it describes shape and arrangement: the geometry of a bike frame, an engine, a room. From Greek roots meaning 'earth measuring'.