Geometry Lesson 1-1: Points, Lines, and Planes

Practice flashcards covering the vocabulary and key concepts of points, lines, and planes from Glencoe Geometry.

Point

A location that has neither shape nor size; named by a capital letter.

Line

Made up of points and has no thickness or width; there is exactly one line through any two points.

Plane

A flat surface made up of points that extends infinitely in all directions; there is exactly one plane through any three points not on the same line.

Undefined Terms

Fundamental concepts in geometry that include point, line, distance along a line, and distance around a circular arc.

Collinear

Points that lie on the same line.

Coplanar

Points that lie in the same plane.

Intersection

The point where two or more geometric figures meet