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Reflections and Symmetry

Reflections and Symmetry. November 23, 2010. Lines of Symmetry. Figures that match exactly when folded in half have line symmetry. Each fold line is called a line of symmetry. Determine whether the figure has line symmetry. If so, copy the lines of symmetry. E.

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Reflections and Symmetry

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  1. Reflections and Symmetry November 23, 2010

  2. Lines of Symmetry Figures that match exactly when folded in half have line symmetry. Each fold line is called a line of symmetry.

  3. Determine whether the figure has line symmetry. If so, copy the lines of symmetry. E

  4. Determine whether the figure has line symmetry. If so, copy the lines of symmetry. G

  5. Determine whether the figure has line symmetry. If so, copy the lines of symmetry. H

  6. Determine whether the figure has line symmetry. If so, copy the lines of symmetry.

  7. Determine whether the figure has line symmetry. If so, copy the lines of symmetry.

  8. Reflection A transformation of a figure over a line. The line it crosses is called line of symmetry.

  9. Graph triangle ABC. A (5, 2), B (1, 3) C(-1, -1) Graph its reflected image over the x-axis. Then find the coordinates of the reflected image.

  10. Graph quadrilateral KLMN K (2, 3) L (5, 1) M (4, -2) N (1, -1) Graph the reflected image over the y axis. Find the coordinates of the reflected image.

  11. Graph quadrilateral GHIJ G (3, -4) H (3, -1) I (-2, -1) J (-2, -4) Graph its reflected image over the x-axis. Then find the coordinates of the reflected image.

  12. Graph triangle PQR P (1, 5) Q(3, 7) R (5, -1) Graph the reflected image over the y axis. Find the coordinates of the reflected image.

  13. Triangle TUV with vertices T (-6, 1), U (-2, -3), and V (5, -4). Triangle TUV is reflected over the x axis. What are the new coordinates without graphing? Remember: over the x axis the x coordinate stays the same and the y coordinate changes.

  14. Triangle MNP with vertices M (2, 1), N (-3, 1) and P (-1, 4) is reflected over the y axis. What are the coordinates of M′N′P′ without graphing the figure? Remember: over the y axis the x coordinate changes and the y coordinate stays the same.

  15. Square ABCD with vertices A(2, 4), B(-2, 4), C(-2, 8) and D(2, 8) is reflected over the x-axis. What are the coordinates of A′B′C′D′?

  16. Trapezoid WXYZ with vertices W(-1, -1), X(4, 1), Y(4, 5) and Z(1, 7) is reflected over the y-axis. What are the coordinates of W′X′Y′Z′?

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