Proving Triangles Similar and Proportions

Which similarity theorem, if any, proves that these triangles are similar?
(Hint: Look for non-labeled parts!)

• SSS
• SAS
• AA
• None, the triangles are not similar

Tags

CCSS.HSG.SRT.B.5

Which similarity theorem, if any, proves that these triangles are similar?

• SSS
• SAS
• AA
• None, the triangles are not similar

Tags

CCSS.HSG.SRT.B.5

Which similarity theorem, if any, proves that these triangles are similar?

• SSS
• SAS
• AA
• None, the triangles are not similar

Tags

CCSS.HSG.SRT.B.5

Which series of transformations could be used to show ΔABE is similar to ΔDCE?

• Reflection over BC and a dilation of ¹/₂ about point E
• Reflection over AD and a dilation of ¹/₂ about point E
• Rotation 90^o about point E and a dilation of ¹/₂ about point E
• Rotation 180^o about point E and

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

Complete each proportion.
CB / DM  =  AC / ?

• BM
• MA
• BC
• AD

Tags

CCSS.HSG.SRT.B.4

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

How many pairs of congruent angles in 2 triangles are needed to prove the 2 triangles are similar?

• 2 or 3
• 1
• 0
• only 3

Tags

CCSS.HSG.SRT.B.5

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

Choose the similarity statement for the triangles.

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

Tags

CCSS.HSG.SRT.A.2

What scale factor was used to produce the image?

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.7.G.A.1