Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Transcribed Image Text:What is a reflection rule that maps each triangle and its image?
Points for triangle D, E, F:
- D(3, 6)
- E(–4, –3)
- F(6, 1)
Points for triangle D', E', F':
- D'(1, 6)
- E'(8, –3)
- F'(–2, 1)
To determine the reflection rule, compare each pair of points:
- For D and D', both points have the same y-coordinate (6), suggesting a vertical reflection.
- For E and E', both points have the same y-coordinate (–3).
- For F and F', both points have the same y-coordinate (1).
Thus, the reflection is likely over a vertical line, such as the y-axis. This would involve reflecting across the vertical line where the x-coordinate changes sign.
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