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9.7 Dilations
HW pg. 629 #321 odds 1
February 11, 2011
no
BellworkHow many lines of symmetry does each figure have?
1. A Rhombus that is not a square. 2
2. Equilateral triangle. 3 Does the figure have rotational symmetry? If so, describe the rotations that map the figure onto itself.
Yes; 72° , 144°3. 4.
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9.7 Dilations
HW pg. 629 #321 odds 2
February 11, 2011
9.7 Dilations
Reduction: 0 < k < 1 Enlargement: k > 1
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9.7 Dilations
HW pg. 629 #321 odds 3
February 11, 2011
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9.7 Dilations
HW pg. 629 #321 odds 4
February 11, 2011
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9.7 Dilations
HW pg. 629 #321 odds 5
February 11, 2011
Scalar Multiplication: multiplying a matrix by a scalar (real number)
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9.7 Dilations
HW pg. 629 #321 odds 6
February 11, 2011
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9.7 Dilations
HW pg. 629 #321 odds 7
February 11, 2011
Using Matrices: Scale factor multiplied by polygon matrix
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9.7 Dilations
HW pg. 629 #321 odds 8
February 11, 2011
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9.7 Dilations
HW pg. 629 #321 odds 9
February 11, 2011
HW pg. 629 #3-21 odds