Similarity Basics

All angles in similar figures are congruent.  

• True
• False

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

Tags

CCSS.7.G.A.1

The pair of figures is similar. Find the missing side.

• x = 12
• x = 3
• x = 40
• x = 4

Tags

CCSS.HSG.SRT.A.2

If two figures are similar, the corresponding sides are ______________.

• equal
• congruent
• proportional
• none of these

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

The measures of the angles in a triangle are 53⁰,78⁰, and 49⁰.  A similar triangle is created by using a dilation with a scale factor of 2.  What are the measures of the angles of this triangle?

• 53⁰,78⁰, and 49⁰
• There is not enough information to answer this question.
• 106⁰,156⁰, and 98⁰
• 26.5⁰,39⁰, and 24.5⁰

Tags

CCSS.8.G.A.3

Find the perimeter of the large triangle.

• 24
• 36
• 12
• 54

Tags

CCSS.6.G.A.3

Find the missing side length. 

• 16
• 12
• 35
• 15

Tags

CCSS.HSG.SRT.B.5

Solve the proportion.

• p=31.3
• p=308
• p=924
• p=532

Tags

CCSS.7.G.A.1

How does a dilation change the angles of a polygon?

• It changes by the scale factor.
• Dilations do not change the angles.
• It is impossible to answer this question.  The angles change unpredictably.
• The angles all change to larger angles.

Tags

CCSS.8.G.A.3

Are the two figures similar?

• yes
• no

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6