U2 Post Assessment Review

The point (5,4) is one of the vertices of a rectangle. The rectangle is dilated by a scale factor of 1.5 with the origin as the center. Then, it is reflected about the y-axis. What is the new x-coordinate of the corresponding vertex?

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

The table shows the original coordinates of Triangle ABC. Triangle ABC will be dilated by a scale factor of 3 to form Triangle A'B'C'. What is the area of Triangle A'B'C'?

Mathematical Equivalence

OFF

Tags

CCSS.8.G.A.3

• a rotation

• a translation

• a dilation that makes any given figure larger

• a dilation that makes any given figure smaller

Tags

CCSS.8.G.A.3

The black triangle is the image of the purple triangle. What is the scale factor used to dilate the pre-image to the image?

• 3

• 2

Tags

CCSS.8.G.A.4

Tags

CCSS.8.G.A.3

Figures 1 (blue) and 2 (green) are shown on the coordinate grid. Which statement is true?

• Figure 1 is similar to Figure 2.

• Figure 1 is congruent to Figure 2.

• Figure 1 is both similar and congruent to Figure 2.

• Figure 1 is neither similar and congruent to Figure 2.

Tags

CCSS.8.G.A.2

CCSS.8.G.A.4

A sequence of transformations was applied to the blue shape to produce the red image. Which of these sequences are correct?

• Blue is reflected about the line WX and translated 3 units up

• Blue is reflected about the line VW and translated 3 units up

• Blue is reflected about the line UV and translated 3 units up

• Blue is reflected about the line WX and translated 3 units down

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

Which statement correctly describes why the two triangles are similar?

• Triangle B'C'D' is obtained by translating triangle BCD 3 units up.

• Triangle B'C'D' is obtained by dilating triangle BCD by a scale factor of 1 using the origin as center.

• Triangle B'C'D' is obtained by dilating triangle BCD by a scale factor of 2 using the origin as center.

• Triangle B'C'D' is obtained by dilating triangle BCD by a scale factor of 1/2 using the origin as center.

Tags

CCSS.8.G.A.4

CCSS.8.G.A.3

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.1

• Triangle A is similar to Triangle A' but Triangle B is NOT similar to Triangle B'.

• Triangle A is NOT similar to Triangle A' and Triangle B is NOT similar to Triangle B'.

• Triangle A is NOT similar to Triangle A' but Triangle B is similar to Triangle B'.

• Triangle A is similar to Triangle A' and Triangle B is similar to Triangle B'.

Tags

CCSS.8.G.A.4