Points, Line and Planes

1
Warm up
Find Slope of the line that goes through the
points
(-1, 3) and (4,7)
2) Use this data 7, 20, 10, 14, 16, 17,
18, 20, 17
a) What is median?
d) What is lower quartile?
b) What is minimum?
e) What is upper quartile?
c) What is maximum?
2
REAL LIFE GEOMETRY
3
GEOMETRY IS EVERYWHERE
4
TRIANGLES
5
Congo flag
Namibia flag
IN FLAGS
Guyana flag
Eritrea flag
Nepal flag
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IN NATURE
Flowering Dogwood Tree
7
CIRCLES
8
IN SPORTS
Hockey Rink
Basketball Court
9
IN MUSIC
10
IN SCIENCE
In Orbits
11
SQUARES AND RECTANGLES
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IN SPORTS
CHESS
SOCCER
BILLARDS
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IN BUILDINGS
Supreme Court Building
Montezuma Castle National Monument
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REMEMBER
GEOMETRY IS EVERYWHERE
JUST LOOK AROUND YOU!
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Learning Targets

1. I can define points, lines and planes.
2. I can draw, label and identify parallel lines.
3. I can draw, label and identify perpendicular
   lines.
4. I can draw label and identify skew lines.

16
Point

• A point locates a position in space. It has no
  length, width, or height, It has no size only
  location.
• D B N
• D, B and N represent points. Use capital letters
  when writing points.

17
Line

• A line is a series of points that form a straight
  path. It continues without end in opposite
  directions.
• A B
• AB represents a line. It can be called BA

18
Intersecting Lines

• The intersections of two or more geometric
  figures is the set of points the figures have in
  common.

Not Intersecting
Intersecting
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Parallel Lines

• Parallel lines are in a plane. They are the
  same distance apart and they never intersect.
• A B
• C D

20
PERPENDICULAR

• Lines that intersect to form right angles.

90
90
90
90
21
Line Segment

• A line segment has 2 endpoints, and it is part of
  a line. It is made up of all the points on the
  line between the 2 endpoints.
• D E
• DE represents a segment. It can be called ED

22
Name Line Segments

• Use the figure to name 3 different line segments.
• A B C

AB
BC AC
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Plane

• A plane is a flat surface that extends without
  end in all directions.
• Plane AMP
• 3 points in any order that are not in a line is a
  plane.

A M P
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Can You Name Some Planes In The Classroom?
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Identifying Objects in a Plane

• Each face of a cube lies in a different plane.
• AB lies in the same plane as CD
• AB lies in the same plane as FG
• CD and FA are NOT in the same plane
• FA and BD are NOT in the same plane

G
B
A
F
H
D
H
___
___
C
___
___
___
___
___
___
26
Use the figure to find the following
A
B
E
F
D
C
H
G
Two pairs of Parallel Lines
Two pairs of Perpendicular Lines
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SKEW LINES

• Lines that lie in different planes. They are
  neither parallel nor intersecting.

28
Use the figure to find the following
A
B
E
F
D
C
H
G
Two pairs of Parallel Lines
Two pairs of Parallel Planes
Two pairs of Skew Lines
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• The End
• Take out your study guide

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Points, Lines, and Planes
LT 1

• POINT A point locates a position in space. It
  has no length, width, or height. It has no size
  only location.

Example Point A

• LINE A line is a series of points that form a
  straight path. It continues without end in
  opposite directions.

Example
A
B

• PLANE A plane is a flat surface that extends
  without end in all directions.

Plane C or Plane MNP
Example
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Parallel Lines
LT 2

• Parallel lines are in a plane. They are the
  same distance apart and they never intersect.
• A B
• C D

32
PERPENDICULAR LINES
LT 3

• Perpendicular lines are lines that intersect to
  form right angles.

?
90
Find x 3x 90 degrees x 30 degrees
3x
90
90
33
SKEW LINES
LT 4

• Lines that lie in different planes. They are
  neither parallel nor intersecting.

F
B
A
E
H
D
G
C

• CD and AE are SKEW LINES
• EF and BD are SKEW LINES

34
Math Symbols

• lt A Angle
• AE Line AE
• AE Ray AE
• AE Line Segment AE
• Equal Sign
• Is Congruent To
• Approximately
• Parallel
• Perpendicular

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Name___________April 4, 2013 Period___
Pink Worksheet Points, lines, planes, Make sure
you label your points, lines, rays and line
segments correctly!