Point, line, and plane are fundamental geometric terms. A point is a position in space with no dimensions. A line extends infinitely in two directions and connects two or more points but has no thickness. A plane is a flat surface that extends infinitely in length and width but has no thickness, defined by any three non-collinear points.

1. Undefined Terms
in
GEOMETRY

8. LINE
POINT
PLANE

9. POINT
-A position in space
-A point is named using CAPITAL LETTERS
-represented by dot
-has no dimension, length, width and thickness
A B C D
Point A, Point B, Point C, Point D

10. POINT

11. LINE
-A straight,continuous arrangement
Of infinitely many points
-has no thickness
-its length is infinite

12. LINE
-it extends infinitely in two directions.
Arrowheads symbolizes infinity.
-it is named using single lower script letter
m
A B
-by any two points in a line
(two CAPITAL LETTERS)
line m/
line AB or line BA

13. LINE

14. PLANE
-A flat surface that extends infinitely along
its length and width
-has length
and width
but no
thickness

15. PLANE
-named by a single CAPITAL LETTER
L
E
I
F
-any 3 points in
a plane which are
Not on the same line
Plane D
Plane LIFE, Plane LIF, Plane IFE

17. sEA
SEATWORK # 1