Math STAAR Transformations

Triangle 1 is dilated by a scale factor of 4.1 using the origin as the center of dilation to create Triangle 2. Which statement about the area and perimeter of Triangle 2 is true?

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 4.1 times the area of Triangle 1.

• The perimeter is 8.2 times the perimeter of Triangle 1, and the area is 8.2 times the area of Triangle 1.

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

• The perimeter is 16.4 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

Tags

8.10.D

The tables show the ordered pairs that represent the vertices of Triangle 1 and its image, Triangle 2, after a dilation with the origin as the center of dilation. Which rule best represents the dilation that was applied to Triangle 1 to create Triangle 2?

• (x, y) → (0.2x, 0.2y)

• (x, y) → (5x, 5y)

• (x, y) → (8x, 8y)

• (x, y) → (10x, 10y)

Tags

8.3.C

A circle with center R(-4, -4) on a coordinate plane is transformed so that its image forms a circle with center R'(-4, 4). Which rules describe transformations that result in a circle with center R'? Select TWO correct answers.

• (x, y) → (x, y + 4)

• (x, y) → (–x, y)

• (x, y) → (x, y + 8)

• (x, y) → (x, –y)

• (x, y) → (–y, x)

Tags

8.10.C

Triangle FGH is shown on the coordinate plane.

Triangle FGH is rotated 90° clockwise to create triangle F’G’H’.

Select ONE correct answer in each box to complete each sentence.

Triangle F’G’H’ is ​ (a)   to triangle FGH.

The orientation of the vertices of triangle F’G’H’ ​ (b)   the same as the orientation of the vertices of triangle FGH.

• congruent

• is

• similar but not congruent

• not similar

• is not

Tags

8.10.A

Q17

• A

• B

• C

• D

Tags

CCSS.HSG.CO.A.2

Q21

• A

• B

• C

• D

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Identify the transformation from ABC to A'B'C'.

• (x+8, y+4)

• (x-8, y-4)

• (x+4, y+8)

• (x-4, y-8)

Tags

CCSS.HSG.CO.A.2

Identify the transformation from ABC to A'B'C'.

• 90^o clockwise rotation

• 90^o counter clockwise rotation

• Reflection across the y-axis

• Reflection across the x-axis

Tags

CCSS.8.G.A.3

Q10

• F

• G

• H

• J

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

• A

• B

• C

• D

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5