geometry/ʤɪ'ɒmɪtrɪ- $ -'ɑ -/

n. a branch of mathematics that deals with space and the relationships between points, lines, etc.

n. [U] 几何学：the laws of geometry 几何定律

◇a geometry lesson 几何课

◇Do you know how geometry was used in ancient times? 你知道古代是如何运用几何学的吗？

构词geo（地球） + metry （= measure测量） →源自“对地球的测量”

同根 geography