Basic Geometry Concepts

Front

What is a point in geometry?

Back

A location with no size or shape.

Front

Line

Back

Made up of points with no thickness or width

Front

line segment

Back

a measurable part of a line consisting of two endpoints

Front

ray

Back

A line that extends indefinitely in one direction

Front

collinear

Back

points that lie on the same line

Front

non-collinear

Back

points that don't lie on the same line

Front

coplanar

Back

points that lie on the same plane

Front

non=planar

Back

points that don't lie on the same plane

Front

congruent segments

Back

if two segments have the same length, then they are congruent

Front

perpendicular

Back

two lines that intersect at a 90 degree angle (right angle) symbol: