1. 9.7 Dilations February 01, 2013
Bellwork
How 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.
3. Yes; 72° , 144° 4. no
Feb 79:19 AM
HW pg. 629 #321 odds 1
2. 9.7 Dilations February 01, 2013
9.7 Dilations
Reduction: 0 < k < 1 Enlargement: k > 1
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3. 9.7 Dilations February 01, 2013
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4. 9.7 Dilations February 01, 2013
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5. 9.7 Dilations February 01, 2013
Scalar Multiplication: multiplying a matrix by a scalar
(real number)
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6. 9.7 Dilations February 01, 2013
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7. 9.7 Dilations February 01, 2013
Using Matrices: Scale factor multiplied by polygon matrix
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8. 9.7 Dilations February 01, 2013
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9. 9.7 Dilations February 01, 2013
HW pg. 629 #3-21 odds
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HW pg. 629 #321 odds 9