Dilation

• A change that alters shape, but not size

• A change that alters size, but not shape

• The spinning of a shape around a central point.

Tags

CCSS.8.G.A.3

Triangle QRS is dilated with the origin as the center of dilation to create triangle Q'R'S'. The coordinates of each vertex are integers.

Which statement is true?

• Triangle Q'R'S' is congruent to triangle QRS.

• Triangle Q'R'S' is similar to triangle QRS.

Tags

8.3.B

Which of the following scale factors could have possibly created the dilation shown?

• 
• 
• 
• 

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CCSS.8.G.A.3

Dilate Point B by a scale factor of 3:

• (12,0)
• (12,12)
• (4,3)
• (0,12)

Tags

CCSS.8.G.A.3

True of False: When you shrink a figure, you multiply by a fraction. 

• true
• false

Tags

CCSS.8.G.A.3

A  figure has a vertices W(-2,4), and X(1,4. Find the  coordinates of the figure after a dilation with a scale factor of 2.

• W(-4,83),  X(2,8)
• W(-4,8), X(2,8)

Tags

CCSS.8.G.A.3

The number multiplied by x and y to result in a dilation is called the ______.

• Scale Factor
• Exponent
• Coefficient
• Variable

Tags

CCSS.8.G.A.3

In this dilation, point A would be considered...

• the center of dilation

• the scale factor

• the center of rotation

• the point of no return

Tags

CCSS.8.G.A.3

A scale factor greater than one creates ....

• a reduction
• an enlargement
• an exact copy
• none of these

Tags

CCSS.8.G.A.3

A triangle has the points A(9, 18), B(12, 3) and C(6, 9). The triangle is being dilated by a scale factor of 1/3. What are the coordinates of B'?

• (36, 9)

• (4, 1)

• (3, 3)

Tags

CCSS.8.G.A.3