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Warm up

Warm up. Translate (x – 9, y + 8) B (-9, 12) A (-12, -4) T (22, -19). B’ (-18, 20). A’ (-21, 4). T’ (13, -11). Review Homework. Daily Check. Reflections. Reflections. A reflection is a FLIP over a line. Also a reflection has:. The same DISTANCE from a central line.

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Warm up

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  1. Warm up Translate (x – 9, y + 8) • B (-9, 12) • A (-12, -4) • T (22, -19) B’ (-18, 20) A’ (-21, 4) T’ (13, -11)

  2. Review Homework

  3. Daily Check

  4. Reflections

  5. Reflections A reflection is a FLIP over a line.

  6. Also a reflection has: The same DISTANCE from a central line. The same SIZE as the original image.

  7. Reflect across the x-axis Change the sign of the y-value

  8. Reflect across the x-axis

  9. Reflect across the y-axis Change the sign of the x-value

  10. Reflect across the y-axis

  11. You Try!Reflect over the x-axis

  12. You Try!Reflect over the y-axis

  13. Lines of Symmetry When a shape is folded and the parts line up perfectly on top of each other, then the fold line is a LINE OF SYMMETRY

  14. Lines of Symmetry • How many lines of symmetry does the polygon have? 3

  15. Lines of Symmetry • How many lines of symmetry does the shape have? 2

  16. Lines of Symmetry • How many lines of symmetry does the shape have? 5

  17. Reflections by Mira Worksheet

  18. Homework Reflections Worksheet

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