geometry pdf
TRANSCRIPT
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By Kelly Boushell
Submitted June 5th, 2010
Dr. Sims
ITC 525 Computers for Educators
A REVIEW OF BASIC CONCEPTS
BEGIN
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Table of Contents
“Choose one of the topics above to begin.”
“When you are ready to begin another topic
click on me at the bottom of the screen to
come back to the table of contents.”
Points
Line Segments
Lines
Rays Angles
Citations Standards
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POINT
A point is a location in space.
Capital letters are used to name points.
A K G
M
More info here!
Table of Contents
Watch movie!
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LINE SEGMENT
A line segment is made up of 2 points and
the straight path between them.
N D
The two points at the ends of a line
segment are called endpoints.
This line segment
is called:
ND or DN
Table of Contents
More info here!
Quiz Me!
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Quiz Me!
1. What is the name of
this geometric figure?
B. Line Segment
A. Line
C. Ray
M E
Table of Contents
BACK
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Try Again
What is the name of this
geometric figure?
B. Line Segment
A. Line
C. Ray
M E
Table of Contents
Need a little help? BACK
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Fabulous!
What is the name of this
geometric figure?
B. Line Segment
M E You remembered a line
segment is made up of 2
points and the straight
path between them!
Table of Contents
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LINE
A line is a straight path that goes on
forever in both directions.
J R
The arrowheads symbolize the line continuing forever,
even though it looks like it stops at the arrowheads.
This line is
called:
RJ or JR
R and J are
points, not end
points!
Table of Contents
More info here!
Quiz Me!
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Quiz Me!
What is the name of this
geometric figure?
A. Line
B. Line Segment
C. Ray
Table of Contents
H
Z BACK
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Try Again
What is the name of this
geometric figure?
A. Line
B. Line Segment
C. Ray
Table of Contents
H
Z Need a little help?
BACK
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Superb!
What is the name of this
geometric figure?
A. Line
Table of Contents
H
Z You remembered a line is
a straight path that goes
on forever in both
directions!
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RAY
A ray is a straight path that has a starting point
and goes on forever in one direction.
B
W This is point B
This is endpoint W
This ray is called:
WB
Note the difference between
point and endpoint!
The endpoint is always the first
letter in the name of a ray!
Table of Contents
More info here!
Quiz Me!
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Quiz Me!
3. What is the name of
this ray?
D
O
A. OD
C. DO
B. OD
Table of Contents
BACK
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Try Again
3. What is the name of
this ray?
D
O
A. OD
C. DO
B. OD
Table of Contents
Need a little help? BACK
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Fantastic!
3. What is the name of
this ray?
D
O
A. OD
You remembered that the endpoint is
always the first letter in the name of a
ray!
Table of Contents
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ANGLE
NEXT
An angle is formed by 2 rays or 2 line segments that
share the same endpoint.
The endpoint where the rays or
segments meet is called the
vertex of the angle.
The rays or segments
are called the sides of
the angle.
Table of Contents
More info here!
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Naming Angles
NEXT
The vertex of the angle must always be
in the middle of the, between the points
on the sides. A
B C
This angle is called:
ABC
The vertex point is
B. That is why B is
in the middle of the
sides A and C.
CBA
or
Table of Contents
BACK
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Classifying Angles
Table of Contents
More info here!
Quiz Me!
Watch movie!
Straight Angle
Measures exactly
180
Acute Angle
Measures between
0 and 90
Reflex Angle
Measures between
180 and 360
Obtuse Angle
Measures between
90 and 180
Right Angle
Measures exactly
90
BACK
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Quiz Me!
Table of Contents
4. What is the classification
of this angle?
A. Acute Angle
B. Reflex Angle
C. Obtuse Angle
BACK
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Try Again
Table of Contents
4. What is the classification
of this angle?
A. Acute Angle
B. Reflex Angle
C. Obtuse Angle Need a little help?
BACK
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Awesome!
Table of Contents
4. What is the classification
of this angle?
C. Obtuse Angle You remembered that
an obtuse angle
measures between 90
and 180 !
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Citations
Bell, M. (2002). Everyday mathematics student reference book. Chicago: McGraw-Hill.
Bell, M. (2002). Everyday mathematics teacher lesson guide. Chicago: McGraw-Hill.
Eather, J. (2001). A maths dictionary for kids. Retrieved on June 3, 2010 from http://www.amathsdictionaryforkids.com/
Pennsylvania department of education. (2009). Academic standards for mathematics. Retrieved on June 3, 2010 from http://www.pdesas.org/main/fileview/Academic_Standards_for_Mathematics_(Elementary).pdf
Weatherall, P. (2009). Angles music video [YouTube Video]. Retrieved on June 3, 2010 from http://www.youtube.com/watch?v=yptZt9hwrzU&feature=related
YourTutorOnline. (2009). Points and lines [YouTube Video]. Retrieved on June 3, 2010 from http://www.youtube.com/watch?v=AJEjpy7AmBU
Zahn, C. (n.d.) You are here' sign/ man getting squashed by an 'x‘. Retrieved on June 3, 2010 from http://www.cartoonstock.com/lowres/cza0219l.jpg
Table of Contents