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TRANSCRIPT
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common core dilation.notebook April 26, 2017
Students will be able to verify experimentally the properties of dilations given by a center and a scale factor.
Day 2
Objective:
Dilations Triangle A’ B’ C’ is a dilation of ∆ ABC with the center of dilation at the origin. List the coordinates of the
vertices of ∆ ABC and ∆ A’B’C’. What is the scale
factor of the dilation? Explain.
Quadrilateral A' B' C' D' is similar to quadrilateral ABCD. Find the scale factor. Justify your answer.
What do you observe is happening with the coordinates of the new image?
Example 1
What do you observe is happening with the coordinates of the new image?
Example 2
How is changing the center of the dilation change the way we calculate the coordinates of the new image from the previous examples?
Example 3
E ( 2, 2)
F ( 2, 4)
G ( 2, 4)
H ( 2, 2)
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Attachments
half in grid blank graph paper.pdf
Dilation Triangle for lesson.docx
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Free Simple Grid Graph Paper from http://incompetech.com/graphpaper/lite/
SMART Notebook
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SMART Notebook
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