Definition, Meaning & Synonyms

plane-geometry

Noun
/pleɪn dʒiˈɒmɪtri/
Definition
The branch of mathematics that deals with shapes and figures on a flat surface, using points, lines, angles, and polygons.
Examples
  • In plane geometry, the sum of the angles in a triangle always equals 180 degrees.
  • The concept of parallel lines is a fundamental principle in plane geometry.
  • Students learn to calculate the area and perimeter of various shapes in plane geometry classes.
Meaning
Plane geometry focuses on two-dimensional figures, studying their properties, relationships, and measurements.
Synonyms
  • Euclidean geometry
  • Flat geometry