What is Geometry?
April 12, 2026 • 11 min read • Math
Geometry is the study of shapes, sizes, positions, angles, and dimensions. This guide covers fundamental geometric concepts including points, lines, angles, polygons, circles, and spatial relationships.
Basic Geometric Elements
Point: A location in space with no size.
Line: Infinite straight path extending in both directions.
Plane: Flat surface extending infinitely in all directions.
Angle: Formed by two rays sharing a common endpoint.
Types of Angles
Acute: Less than 90°
Right: Exactly 90°
Obtuse: Greater than 90° but less than 180°
Straight: Exactly 180°