Review - Dilations centered at the origin +Stretches/Shrinks

A ___________ is a type of transformation that enlarges or reduces a figure (the preimage) creating a new figure (image)

• Translation

• Reflection

• Rotation

• Dilation

Tags

CCSS.8.G.A.3

Every dilation has 2 components, they are;

• Center of Dilation

  Scale Factor of Dilation

• Center of Dilation

  Origin of Dilation

• Scale Factor of Dilation

  Direction of Dilation

• Scale Factor of Dilation

  Distance of Dilation

Tags

CCSS.8.G.A.3

Dilations produce...

• Congruent Figures

• Similar Figures

• Figures that have no relationship with each other

• Scale Factor of Dilation

  Distance of Dilation

Tags

CCSS.8.G.A.3

Check the different types of Dilations

• Enlargement

• Reduction

• Stretch

• Shrink

Tags

CCSS.8.G.A.3

The rule for an enlargement dilation is...

• (x,y) ---> (kx, ky), where k >1

• (x,y) ---> (kx, ky), where 0 < k < 1

• (x,y) ---> (x, ky), where k >1

• (x,y) ---> (kx, y), where k >1

Tags

CCSS.8.G.A.3

The rule for an reduction dilation is...

• (x,y) ---> (kx, ky), where k >1

• (x,y) ---> (kx, ky), where 0 < k < 1

• (x,y) ---> (x, ky), where k >1

• (x,y) ---> (kx, y), where k >1

Tags

CCSS.8.G.A.3

With an enlargement, the scale factor "k" must be

• Greater than 1

• Between 0 and 1

• Equal to 1

• Less than 0

Tags

CCSS.8.G.A.3

With an reduction, the scale factor "k" must be

• Greater than 1

• Between 0 and 1

• Equal to 1

• Less than 0

Tags

CCSS.8.G.A.3

Check all properties NOT preserved in a dilation

• Distance

• Angle measure

• Orientation

• Parallelism

• Collinearity

Tags

CCSS.HSG.CO.A.2

A dilation is an isometry

• True

• False

Tags

CCSS.8.G.A.3