module 1 lesson 21
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Module 1 Lesson 21.notebook
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October 17, 2013
An Exercise in Changing Scales
Do Now: Complete the following table.
10/17/13Module 1, Lesson 21
HW: Study for Quiz 2Quiz 2 moved to Monday
x y total3.25
4 126 1
2
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Problem Set Sample Solution continued...
Module 1 Lesson 21.notebook
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Problem Set Sample Solution continued...
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October 17, 2013
Problem Set Sample Solution continued...
Module 1 Lesson 21.notebook
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October 17, 2013
Problem Set Sample Solution continued...
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Questions:1.) Would this new scale create a larger or smaller scale drawing as compared to the original?
2.) How would you use the scale factor between SD1 and SD2 to calculate the new scale drawing lengths without using the original measurements?
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1 2 3
12
34
4
32
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EnlargementsReduction
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Closing:
Why might you want to produce a scale drawing of a different scale?
How do you produce another scale drawing given the original scale drawing and a different scale?
How can you tell if a new scale drawing is a scale drawing of the original figure?
How can the scale factor of the new drawing to the original figure be determined?
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