1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Mrs. Burton's
Definition:
Unit 1 Vocab
Important Facts:
Point
Line
Plane
Notation
Diagram
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Point
a location, is the simplest
figure in geometry
Important Facts:
-no size and no dimension
- it represents one position in space
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Point
is the simplest
figure in geometry
A
B
Notation: Capital Letters
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3
1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Line
an infinite set of
points that extends
in 2 directions
Important Facts:
-Only 1 dimension (length)
-Given any 2 points you can draw
exactly 1 line
-You can draw an infinite amount of
lines through one point
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Line
an infinite set of
points that extends
in 2 directions
A
m
B
Notation: 2 points that lie on the same line OR using a
lower case letter
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Plane
an infinite set of points that
creates a flat surface that
extends without ending
Important Facts:
-two dimensional (length and width)
- extends forever in both directions
and has no thickness or edges
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Plane
can be visualized by
looking at a wall or floor
A
D
B
M
C
Notation: named by 1 capital letter (like a point) or by
at least 3 points that lie in a plane
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Space
the set of ALL points.
Important Facts:
-three dimensional (length, width,
thickness)
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Collinear Points
points that lie on the same line.
Important Facts:
- Two points are ALWAYS collinear
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Collinear Points
points that lie on the same line.
B
Are A and B collinear?
E
C
A
D
Yes! Any two points are
collinear. We can
ALWAYS draw exactly 1
line between two given
points
___, ___, and __ are collinear
___, ___, and __ are noncollinear
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Coplanar Points
points that lie on the same plane.
Important Fact:
A plane can be drawn through any
three non-collinear points.
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Coplanar Points
points that lie on the same plane.
K
A
J
G
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C
H
D
B
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Intersection
The symbol for intersection is ______.
Set A = {-2,0,2,5,6,8}
Set B={-3,-2,-1,0,6}
Find A∩B.
We can also find the Union (∪) of two
sets.
Find A ∪ B.
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
The intersection of two figures is the set of points
that are in both figures.
If two lines intersect, then they intersect at a point.
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
If two planes intersect, then they intersect at a line.
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1­2, 1­3, 1­5 Vocab Flip Book
September 01, 2016
Homework:
p. 7-8 WE #1-10, 19-26
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