What are the coordinates of point S"? |
(-3/2, 9/2) |

Which transformations could have occurred to map △ABC to △A"B"C"? |
a reflection and a dilation |

Which transformations could be performed to show that △ABC is similar to △A"B"C"? |
a 180° rotation about the origin, then a dilation by a scale factor of 1/3 |

△XYZ was reflected over a vertical line, then dilated by a scale factor of 1/2, resulting in △X’Y’Z’. Which must be true of the two triangles? Check all that apply. |
△XYZ ~ △X’Y’Z’ XZY ≅ Y’Z’X’ XZ = 2X’Z’ |

Which composition of transformations will create a pair of similar, not congruent triangles? |
a rotation, then a dilation |

Triangle MNO was dilated, then [___________], to create triangle YHQ. |
-rotated |

Which piece of additional information can be used to prove △CEA ~ △CDB? |
∠BDC and ∠AED are right angles |

Right triangle ABC is reflected over AC, then dilated by a scale factor of 2/3. Which statements about the two triangles must be true? Check all that apply. |
✔️△ABC ~ △DEC ✔️∠B ≅ ∠E ✖️3BC = 2EC ✔️3DE = 2AB ✖️3m∠A = 2m∠D ✖️2m∠A = 3m∠D |

What is the missing statement in step 4? |
∠EAB ≅ ∠DBC |

Multiple similarity transformations are performed on a triangle. Which elements must be preserved? |
angle measure |

Given: AB ∥ DE |
AA similarity theorem |

Which diagram could be used to prove △ABC ~ △DEC using similarity transformations? |
(answer with 2 right triangles next to eachother) |

Triangle RST was [______________], then dilated, to create triangle ZXY. |
-translated |

Which must be true in order for the relationship △ZYV ~ △XWV to be correct? |
∠Z ≅ ∠X and ∠W ≅ ∠Y |

In the diagram below, m∠A = 55° and m∠E = 35°. Which best explains the relationship between triangle ACB and triangle DCE? |
D. The triangles are similar because all pairs of corresponding angles are congruent. |

Which diagram could be used to prove △ABC ~ △DEC using similarity transformations? |
1st image A. |

# Triangle Similarity- AA

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