Dilation and Angle Review

Is this an enlargement or a reduction? What is the scale factor if the origin is the center of dilation?

• It's a reduction; the scale factor is 2.

• It's an enlargement; the scale factor is 2.

• It's an enlargement; the scale factor is 1/2.

• It's a reduction; the scale factor is 1/2.

Tags

CCSS.8.G.A.3

Select all true statements for dilations.

• In a dilation the angles are congruent.

• Dilations make shapes congruent

• In a dilation the sides are proportional not congruent

• In dilations the scale factor determines how big or small a shape gets.

Tags

CCSS.8.G.A.3

Organize these options into the right categories

Groups:

(a) Enlargement (bigger)

,

(b) Reduction (Smaller)

,

(c) Stay the Same

• 
• 
• Scale factor = 0.3

• Scale factor = 1

• Scale factor = 9

• 
• Scale factor = 5

Tags

CCSS.7.G.A.1

Determine the scale factor (k) that was used to complete the dilation.

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

What is the scale factor?

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

Determine the dilation using a scale factor of 10.

A(0, 4) --> A' ( , )?

(a)  

Tags

CCSS.8.G.A.3

Determine the dilation using a scale factor of 4.

D(-1, 3) --> D' ( , )?

(a)  

Tags

CCSS.8.G.A.3

Determine the dilation using a scale factor of 6.

C(2, 7) --> C' ( , )?

(a)  

Tags

CCSS.8.G.A.3

What angle pair is pictured?

• Adjacent

• Supplementary Angles
• Vertical Angles
• Congruent Angles

Tags

CCSS.7.G.B.5

Which of these angles is congruent to angle 5?

• Angle 6
• Angle 8
• Angle 1
• Angle 4

Tags

CCSS.8.G.A.5