Vocabulary Parley 4: Similarity

What is a dilation in geometry?

• A transformation that changes the shape of an image

• A transformation that changes the size of an image

• A transformation that changes the color of an image

Tags

CCSS.8.G.A.3

What remains unchanged in a dilation?

• Side lengths

• Angles

• Area

• Volume

Tags

CCSS.8.G.A.3

What is the formula for finding the scale factor in a dilation?

Tags

CCSS.8.G.A.3

What does a scale factor of k = 2 indicate?

• The image is reduced by half

• The image is doubled in size

• The image remains the same size

• The image is tripled in size

Tags

CCSS.8.G.A.3

What is an example of a contraction in terms of scale factor?

• k = 1/2

• k = 2

• k = 3

• k = 4

Tags

CCSS.8.G.A.3

Which of the following is a rule for scale factor expansions?

• k > 1 or k < -1

• -1 < k < 1

• k = 0

• k = 1

Tags

CCSS.8.G.A.3

Where can the center of dilation be located?

• Outside the figure, on the figure's side, or inside the figure

• Only inside the figure

• Only outside the figure

• Only at the figure's vertex

Tags

CCSS.8.G.A.3

What is an example of a positive enlarging scale factor?

• k = 2

• k = -1/2

• k = 0

• k = -2

Tags

CCSS.8.G.A.3

Where is the center of dilation when the scale factor is negative?

• Inside the pre-image

• Outside the image

• Between the image and pre-image

• At the origin

Tags

CCSS.8.G.A.3

What is the term for sides that are in the same relative position in similar figures?

• Corresponding Sides

• Proportional Sides

• Reciprocal Sides

• Exchange Sides

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6