Module 10 Quiz

Which of the following describes a figure and its image under a dilation?

• They are equivalent.

• They are congruent.

• They are similar.

• None of the Above

A figure is dilated by a factor of 3. Which of the following statements about the image of the figure is true?

• The perimeter decreases.

• The area decreases.

• Both the area and the perimeter decrease.

• Both the area and the perimeter increase.

The only transformation that does not preserve size is a _____________

• translation

• reflection

• dilation

• rotation

The black triangle was transformed to make the gray triangle. Which represents the transformation?

• (x, y) → (x + 3, y + 3)

• (x, y) → (3x, 3y)

• (x, y) → (x - 2, y - 2)

• (x, y) → (x + 2, y + 2)

How is the image of a figure that is dilated related to the original figure?

• It is equivalent

• It is congruent

• It is similar

• It is rotated

The vertices of a square are located at

(2, 2), (5, 2), (5, 5), and (2, 5). The square is dilated by a scale factor of 2. The center of dilation is the origin (0, 0). What are the coordinates of the vertices of the image of the square?

• (4, 4), (10, 4), (10, 10), (4, 10)

• (1, 1), (2.5, 1), (1, 2.5), (2.5, 2.5)

• (4, 4), (7, 4), (4, 7), (7, 7)

• (2, 2), (5, 2), (5, 5), (2, 5)

KLMN is a rectangle. What is its image under a dilation with a scale factor of ⅓?

• a larger rectangle

• a smaller rectangle

• the same rectangle

• a perfect square

A triangle with angles of 30 degrees, 60 degrees and 90 degrees is dilated by a scale factor of 3. What happens to the angles?

• They are tripled.

• They are divided by 3

• They stay the same.

• They are all increased by 3⁰

A dilation of a triangle is drawn using a scale factor less than 1. Will the image be larger than the original triangle or smaller than the original triangle? Explain how you know.

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Identify the transformation shown on the grid below.