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9.59.6.notebook 1 February 28, 2014 Feb 287:12 AM 9.5 Symmetry Line Symmetry : figure can be mapped onto itself across a line (reflection symmetry or axis symmetry) Feb 287:17 AM Rotational Symmetry: figure can be mapped onto itself by a rotation of 0 0 to 360 0 about the center of the figure (radial symmetry) Order of Symmetry: number of time it maps onto itself as it rotates from 0 0 to 360 0 Center of Symmetry : center of the figure (point of symmetry) Magnitude of Symmetry: smallest angle that the figure can be rotated onto itself (angle of rotation)

9.5 Symmetry · 9.59.6.notebook 3 February 28, 2014 Feb 287:28 AM 9.6 Dilations Dilation: enlargement or reduction in respect to a center and scale factor

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Page 1: 9.5 Symmetry · 9.59.6.notebook 3 February 28, 2014 Feb 287:28 AM 9.6 Dilations Dilation: enlargement or reduction in respect to a center and scale factor

9.5­9.6.notebook

1

February 28, 2014

Feb 28­7:12 AM

9.5 Symmetry

Line Symmetry: figure can be mapped onto itself across a line(reflection symmetry or axis symmetry)

Feb 28­7:17 AM

Rotational Symmetry: figure can be mapped onto itself by a rotation of 00 to 3600 about the center of the figure(radial symmetry)

Order of Symmetry: number of time it maps onto itself as it rotates from 00 to 3600

Center of Symmetry: center of the figure (point of symmetry)

Magnitude of Symmetry: smallest angle that the figure can be rotated onto itself (angle of rotation)

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9.6 DilationsDilation: enlargement or reduction in respect to a center and scale factor

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Homework

p.666 #1­8

p.677 #1­7 odd

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