Similarity Proofs

Determine whether the triangles are similar(name the postulate or theorem you used).

• SSS similar
• AA similar
• SAS similar

Tags

CCSS.HSG.SRT.B.5

Complete each proportion.
CB / DM  =  AC / ?

• BM
• MA
• BC
• AD

Tags

CCSS.HSG.SRT.B.4

What is the value of X and Y ?

• X=2.5 and Y=6.5
• X=6.5 and Y=2.5
• X=3 and Y=7
• X=2 and Y= 5

Tags

CCSS.HSG.SRT.A.2

Complete the similarity statement.
ABC ~ ___

• ZYX
• XZY
• YZX
• XYZ

Tags

CCSS.HSG.SRT.A.2

Are these triangles similar?
Known angles in Triangle 1:  40⁰,60⁰
Known angles in Triangle 2:  60⁰,40⁰

• Yes
• No
• There is not enough information to decide.

Tags

CCSS.HSG.SRT.A.2

2 triangles are similar if _____________.

• their angles are congruent.
• their sides are congruent.
• their areas are equal.
• their perimeters are equal.

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

If the triangles are similar, state how.

• SSS

• SAS

• AA

• Not similar

Similarity Ratio: _

• 2/3
• 1/2
• 2
• 3

Tags

CCSS.HSG.SRT.A.2

Choose the similarity statement for the triangles.

• ΔMNL ∼ ΔOPQ
• ΔNOM ∼ ΔPQL
• ΔLMN ∼ ΔPQO
• ΔMLN ∼ ΔPQO

Tags

CCSS.HSG.SRT.A.2