Topic 3 Transformations

Which of these describes the transformation of the triangle?

• Reflection over the x-axis

• Reflection over the y-axis

• Rotation of 90 degrees clockwise about the origin

• Rotation of 180 degrees clockwise about the origin

Which transformation will result in an image which is similar, but not congruent, to the pre-image?

• dilation

• rotation

• reflection

• translation

Which of these transformations occur when the fan blades turn?

• dilation

• reflection

• rotation

• translation

Which of the following describes the transformation shown here?

• dilation with a scale factor of 2

• rotation of 90 degrees counterclockwise

• reflection over the x-axis

• translation up 2 units

The marching band enters the gym and marches across the gym without turning. Which of these describes the transformation?

• dilation

• reflection

• rotation

• translation

Which transformation best describes the image of an object viewed through a microscope?

• dilation

• reflection

• rotation

• translation

Which of these transformations describes an image in a mirror?

• dilation

• reflection

• translation

• rotation

The result of a transformation.

• Pre-image
• Image

The original figure prior to a transformation.

• Pre-image
• Image

A triangle has vertices with coordinates (2,4), (-2, -6) and (6,-2). If the triangle is dilated by a scale factor of 2 with the origin as the center of dilation, what are the coordinates of the vertices of the image?

• (1,2), (-1,-3), (3,-1)

• (4,8), (-4,-12), (12,-4)

• (4,6), (0,-4), (8,0)

• (0,2), (-4,-8), (4,-4)