8.3ABC, 8.10D - Dilation

If two shapes are similar, what can be said about the ratio of their corresponding sides?

• The ratio is always 1:1.

• The ratio is proportional.

• The ratio is always greater than 1.

• The ratio is always less than 1.

A triangle with sides 3 cm, 4 cm, and 5 cm is dilated by a scale factor of 2. What are the lengths of the sides of the new triangle?

• 6 cm, 8 cm, 10 cm

• 3 cm, 4 cm, 5 cm

• 9 cm, 12 cm, 15 cm

• 1.5 cm, 2 cm, 2.5 cm

• The area remains the same.

• 4 units by 2 units

• 8 units by 4 units

• 16 units by 8 units

• 2 units by 1 unit

Which of the following statements is true about the angles of a shape and its dilation?

• The angles become larger.

• The angles become smaller.

• The angles remain the same.

• The angles are doubled.

A square with an area of 16 square units is dilated by a scale factor of 4. What is the area of the new square?

• 64 square units

• 256 square units

• 32 square units

• 128 square units

If a rectangle is dilated by a scale factor of 0.5, what happens to its perimeter?

• The perimeter is halved.

• The perimeter remains the same.

• The perimeter is doubled.

• The perimeter is quadrupled.

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

CCSS.8.G.A.4

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

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4