STAAR Dilations Review

Triangle ABC is dilated using a scale factor of 1/2. What are the new coordinates of point A'?

• (-3, 3)
• (-12, 12)
• (-2, 2)

Tags

CCSS.8.G.A.3

Figure ABCD has an area of 4 units². It is then dilated using a scale factor of 4. What is the perimeter of the new figure?

• 32
• 64
• 8

Tags

CCSS.7.G.A.1

What is the scale factor shown in the dilation shown?

• 5
• 1/5
• 10

Tags

CCSS.8.G.A.3

Which of the following is true about the dilation?

• The figures are congruent but have different orientation.
• The figures are not congruent and have the same orientation.
• The dilation shows a reduction.

Choose the correct scale factor:

• 2.5

• 1.5

• 3.5

• 4

Tags

CCSS.7.G.A.1

What is the algebraic rule for the dilated image?

• ( x , y ) --> ( 3x, 3y )
• ( 3x, 3y ) --> ( x , y )
• (x , y) --> (0.3x , 0.3y)
• ( x , y ) --> ( 2x, 2y )

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

If a shape is dilated by a scale factor of one-half, what is the resulting perimeter? 

• The new perimeter is one-half the original
• The new perimeter is 2 times the original
• The new perimeter is one-fourth the original 
• The new perimeter is 4 times the original

Tags

CCSS.8.G.A.3

If a rectangle has an area of 48 cm², what would be the area of   a similar rectangle if the dimensions are doubled?

• 96 cm²
• 192 cm²
• 216 cm²
• 2304 cm²

Using the algebraic rule (x, y) --> (2.5x, 2.5y), what would be the coordinates of C' if point C is located at (-10, 8).

• C'(-4, 3.2)
• C'(-25, 20)
• C'(-25, 8)
• C'(-4, 20)

Tags

CCSS.8.G.A.3