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anonymous

  • one year ago

What set of reflections and rotations would carry rectangle ABCD onto itself? (a) Rotate 180°, reflect over the x-axis, reflect over the line y=x (b) Reflect over the x-axis, rotate 180°, reflect over the x-axis (c) Rotate 180°, reflect over the y-axis, reflect over the line y=x (d) Reflect over the y-axis, reflect over the x-axis, rotate 180°

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  1. anonymous
    • one year ago
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  2. perl
    • one year ago
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    Carry onto itself means that the transformation ends up at the same rectangle.

  3. perl
    • one year ago
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    Pick a vertex and execute the transformations.

  4. anonymous
    • one year ago
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    im still confused.

  5. perl
    • one year ago
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    Let's take the vertex (-1,1) a point on that rectangle.

  6. anonymous
    • one year ago
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    what do i do after i take that point ?

  7. perl
    • one year ago
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    if we rotate it 180 degrees we get (1,-1)

  8. anonymous
    • one year ago
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    So i would rotate all the other points also ?

  9. perl
    • one year ago
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    yes

  10. anonymous
    • one year ago
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    There is no typo, i copied and paste it straight from the worksheet.

  11. perl
    • one year ago
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    it says x axis twice

  12. perl
    • one year ago
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    Can we look at part d) What happens when you do the transformations to the point (-1,1)

  13. perl
    • one year ago
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    Start with (-1,1) Reflect over the y-axis --->(1,1) reflect over the x-axis--->(1,-1) rotate 180°---->(-1,1)

  14. perl
    • one year ago
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    Notice that you end up at the same point you started with

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