Non Rigid Transformations

Identify the transformation

• Dilation

• Translation

• Reflection

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

• Yes, enlarge

• Yes, reduce

• No

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

Dilation is a type of ...

• rigid transformation

• non-rigid transformation

Which rule would dilate shows a scale factor of 4

• (x, y) → (y, x)

• (x, y) → (x + 4, y + 4)

• (x, y) → (x, -y)

• (x, y) → (4x, 4y)

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

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

• ½

• ¼

• 4

• 2

Did the image enlarge, reduce or none of the above?

• Enlarge

• Reduce

• None of the above

For the figure shown, which point would be closest to center of dilation?

• (5, 7)

• (-8 1)

• (-1, 4)

• (0, 5)

For the triangle shown, which image below is the only one to have been dilated by a scale factor of 1/2 ?

(HINT: pay attention to the grids--they are all using same scale of 1 box = 1unit)

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