1. 1-1: Point Lines and Planes
Part 1

2. Today’s Objective:
By the end of the class, I will be able to identify basic geometric vocabulary using words, symbols, and sketches.

3. An exact location in space with indefinite shape and size.
TERM
DESCRIPTION
SKETCH
NAME IT
POINT
An exact location in space with indefinite shape and size.

4. An object with no thickness that extends infinitely in TWO directions.
TERM
DESCRIPTION
SKETCH
NAME IT
LINE
An object with no thickness that extends infinitely in TWO directions.

5. TERM DESCRIPTION SKETCH NAME IT
LINE
SEGMENT
A “piece” of a line consisting of 2 endpoints and all points in between.

6. TERM
DESCRIPTION
SKETCH
NAME IT
RAY
A “piece” of a line consisting of 1 endpoint and all points in between.

7. TERM DESCRIPTION SKETCH NAME IT
OPPOSITE
RAYS
Two rays sharing the same endpoint and continuing infinitely in opposite directions.

8. A flat surface that extends infinitely in all directions.
TERM
DESCRIPTION
SKETCH
NAME IT
PLANE
A flat surface that extends infinitely in all directions.

9. Points that lie on the same line.
TERM
DESCRIPTION
SKETCH
NAME IT
COLLINEAR
Points that lie on the same line.

10. Points that DO NOT lie on the same line.
TERM
DESCRIPTION
SKETCH
NAME IT
NON-
COLLINEAR
Points that DO NOT lie on the same line.

11. Points that lie on the same plane.
TERM
DESCRIPTION
SKETCH
NAME IT
COPLANAR
Points that lie on the same plane.

12. Points that DO NOT lie on the same plane.
TERM
DESCRIPTION
SKETCH
NAME IT
NON-
COPLANAR
Points that DO NOT lie on the same plane.