8th Grade Go Math Module 10 Review

Triangle ABC is dilated by a scale factor of 2, then reflected over the x-axis. What are the new coordinates?

(Lesson 10.3)

• (4, 14) (16, 2) (8, -2)

• (-14, 4) (-2, 16) (2, 8)

• (4,-14) (16,-2) (8, 2)

• (2, 7) (8, 1) (4, -1)

Figure 1 is transformed to figure A. Figure A is transformed to B. Figure B is transformed to C. Which figures are similar? Select all answers that are true.

(Lesson 10.3)

• Figures C and 1 are similar.

• Figures A and 1 are similar.

• Figures A and C are similar.

• Figures B and C are similar.

How are triangle R'S'T' and triangle RST related?

(Lesson 10.1)

• RST is an enlargement of R'S'T'.

• R'S'T' is an enlargement of RST.

• RST is a reduction of R'S'T'.

• R'S'T' is a reduction of RST.

What sequence of transformations was used to transform figure A to figure B?

(Lesson 10.3)

• Dilate by scale factor of 2. Translate right 4 units, up 1 unit.

• Dilate by scale factor of 2. Reflect over the x-axis.

• Translate 3 units left. Dilate by scale factor of 2.

• Translate 3 units right. Dilate by scale factor of 2.

Find the ratio of the corresponding sides. Select all that are true.

(Lesson 10.1)

What scale factor is used to dilate figure JKLMN?

(Lesson 10.2)

• 1/3

• 2

• 3

• 6

Is triangle A'B'C' a dilation of triangle ABC? Select the best answer.

(Lesson 10.1)

• No, because they are not the same size.

• No, because they are not congruent.

• Yes, because they are on the same side of the line.

• Yes, because the ratios of corresponding sides are equal.

What transformation was used to transform figure 1 to figure A?

(Lesson 10.3)

• reflection over the x-axis

• rotation 90° clockwise

• reflection over the y-axis

• translation 4 units left

Do the figures represent a reduction or an enlargement?

(Lesson 10.2)

• It's a reduction because the scale factor is 1/3.

• It's a reduction because the scale factor is 3.

• It's an enlargement because the scale factor is 1/3.

• It's an enlargement because the scale factor is 3.

Which scale factor results in a new figure that is a reduction?

(Lesson 10.1)

• 1/2

• 0

• 1.5

• 2