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