A point A (7,2) is rotated counterclockwise about the origin by 90° and it's image is then translated down 2 units. If the final part is labeled as A then which of the following would be the length of AA

Mathematics For Machine Technology
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Author:Peterson, John.
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Chapter87: An Introduction To G- And M-codes For Cnc Programming
Section: Chapter Questions
Problem 23A: Write a G-code program for the counterclockwise arc with starting point (-40, -20), ending point...
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A point A (7,2) is rotated counterclockwise about the origin by 90° and it's image is then translated down 2 units. If the final part is labeled as A then which of the following would be the length of AA?
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Step 1

A point A (7,2)

This point rotated counterclockwise about the origin by 90°

then translated down 2 units.

final part is Labeled 

length of AA? 

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