Geometry 7.1.notebook
September 02, 2015
DO NOW:
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Define the following terms. Use the
glossary
transformation
pre-image
image
isometry
reflection
rotation
translation
DO NOW:
A transformation
or onto itself.
is a mapping of a figure onto another
The original figure is called the
pre-image , the
transformed figure is the
image .
An isometry ( rigid transformation ) is a transformation
in which the pre-image and image are congruent.
3 Rigid Transformations:
• reflection over a line
• rotation about a point
• translation (slide)
Geometry 7.1.notebook
September 02, 2015
7.1 Rigid Motion in a Plane
Mastery Objective :
• You will be able to identify the 3 basic
rigid transformations and use
terminology
related to transformations.
rigid
• reflection
• rotation
• translation
• dilation
http://www.mathopenref.com/translate.html
http://nlvm.usu.edu/en/nav/topic_t_3.html
Geometry 7.1.notebook
Example:
Example:
September 02, 2015
Geometry 7.1.notebook
Example:
Example:
September 02, 2015
Geometry 7.1.notebook
Homework
7.1 p399 # 12-31,34-38,43-45
September 02, 2015