8th Grade Unit 2 Lesson 2 - Dilations on Circular Grid

What is Dilation?

• Dilation means to enlarge or reduce

• Dilation means to reflect on something

• Dilation means to like something

• Dilation means to make something different by making it smaller

Tags

CCSS.8.G.A.3

If the scale factor is GREATER than 1, then the starting figure will get ​ (a)   and it will move ​ (b)   from the center of dilation.

• bigger
• smaller
• further
• closer

Tags

CCSS.8.G.A.3

If the scale factor is LESS than 1, then the starting figure will get ​ (a)   and it will move ​ (b)   ​ from the center of dilation.

• smaller
• bigger
• closer
• further

Tags

CCSS.8.G.A.3

What is the formula for scale factor?

Tags

CCSS.7.G.A.1

Sort each scale factor as a Reduction (making smaller) or Enlargement (making bigger).

Groups:

(a) Reduction (Smaller)

,

(b) Enlargement (Bigger)

• 2/5

• 1/2

• 5

• 4

• 1/3

• 2

Tags

CCSS.8.G.A.3

What is the scale factor that takes ABC to A'B'C" ?

• 6

• -6

• 4

• 1/4

Tags

CCSS.HSG.CO.A.2

What is the scale factor that takes ABCD to A'B'C'D' ?

• 2

• 1/2

• 1/3

• 1/4

Tags

CCSS.HSG.CO.A.2

If Point B (4,-1) is dilated by a scale factor of 3, where would B' be?

• (12,-3)

• (1,2)

• (8,-2)

• (12,3)

Tags

CCSS.8.G.A.3

If Point C (0,9) was dilated by a scale factor of 1/3, where would C' be located?

• (0,6)

• (1/3, 9 1/3)

• (0,12)

• (0,3)

Tags

CCSS.8.G.A.3

Where would A' be if the Point A was dilated by a scale factor of 2?

Tags

CCSS.8.G.A.3