Similarity and Proofs

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

• SSS

• SAS

• AA

• None, the triangles are not similar

Which of the statements is true about the graphed triangles?

• They are similar, because the image can be obtained by dilating about the origin with a scale factor of 2.

• They are similar, because the image can be obtained by dilating about the origin with a scale factor of 1/2.

• They are not similar, because the image can be obtained by dilating about the origin with a scale factor of 2.

• They are not similar, because the image can be obtained by dilating about the origin with a scale factor of 1/2.

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

Are the triangles similar?

• Yes

• No

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

• SSS

• SAS

• AA

• None, the triangles are not similar

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

• SSS

• SAS

• AA

• None, the triangles are not similar

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

• AA

• SAS

• SSS

• None, the triangles are not similar

Why are the triangles similar?

• AA~

• SAS~

• SSS~

• AAS~

What would be the correct "given" statements for this diagram?

• T is the midpoint of segment BG and
  ∡B≅∡G

• ∡B≅∡G and ∡A≅∡W

• T is the midpoint of segment BG and ∡A≅∡W

• T is the midpoint of segment AW and ∡A≅∡W

What is the "statement" for step 3 of the proof?

• AD=DA

• AN = AH

• HD=ND

• HD=DN