Similar Triangles & Transformations

Which transformation is shown?

• Translation

• Reflection over the x-axis

• Reflection over the y-axis

• 90^o clockwise rotation

What sequence of transformations could map ∆ABC onto its image ∆A''B''C''? (Remember: You're transforming from purple, to green, to red.)

• a reflection followed by a rotation

• a reflection followed by a translation

• a translation followed by a rotation

• a translation followed by a reflection

Which transformation is shown?

• Translation

• Reflection over the x-axis

• Reflection over the y-axis

• 90^o counterclockwise rotation

Which transformation is shown?

• 90^o counterclockwise rotation

• Reflection over the x-axis

• Reflection over the y-axis

• 90^o clockwise rotation

Identify the sequences of transformations from the green image to the red image to the blue image.

• rotation then translation

• translation then rotation

• translation then reflection

• rotation then reflection

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

Which algebraic rule shows how triangle ABC being translated to triangle A'B'C'?

• (x, y) --> (x - 3, y + 8)

• (x, y) --> (x + 3, y - 8)

• (x, y) --> (x - 4, y + 9)

• (x, y) --> (x + 4, y - 9)

A transformation that “turns” a figure about a fixed point at a given angle and a given direction.

• reflection

• translation

• rotation

• dilation

A dilation is which of the following: 

• only an enlargement

• only a reduction

• Either an enlargement or a reduction

• Neither an enlargement or a reduction

What scale factor was used to produce the image?

• 1

• 7

• 18

• 49