Triangle Similarity: AA pretest (100%)

Right triangle ABC is reflected over AC, then dilated by a scale factor of to form triangle DEC. Which statements about the two triangles must be true? Select three options.

A, B and D △ABC ~ △DEC ∠B ≅ ∠E 3DE = 2AB

ΔXYZ was reflected over a vertical line, then dilated by a scale factor of , resulting in ΔX'Y'Z'. Which must be true of the two triangles? Select three options.

A, B, D △XYZ ~ △X'Y'Z' XZY ≅ Y'Z'X' XZ = 2X'Z'

ΔMNO was dilated, then _____________, to create ΔYHQ.

A, rotated

Which diagram could be used to prove △ABC ~ △DEC using similarity transformations?

A, the first graph

Which piece of additional information can be used to prove △CEA ~ △CDB?

A, ∠BDC and ∠AED are right angles

Which transformations could have occurred to map △ABC to △A"B"C"?

C, a reflection and a dilation

Which must be true in order for the relationship to be correct? (ZYX-WVU)

D, Angle Z-W and angle X-U

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 transformations could be performed to show that △ABC is similar to △A"B"C"?

D, a 180° rotation about the origin, then a dilation by a scale factor of

Which composition of transformations will create a pair of similar, not congruent triangles?

D, a rotation, then a dilation