Rotations and Dilations Quiz

A ___________ is a geometric term that represents an

infinite set of points with no thickness and

its length continues in two opposite

directions indefinitely.

Identify the type of dilation for the scale factor k=1/2.

• Reduction

• Enlargement

• Isometry

• None of these

What is the rule for rotating a figure 270 degrees counterclockwise

• (-y, x)

• (-x, -y)

• (y, -x)

• (-y, -x)

A dilation with a scale factor k>1 is called what?

Identify the type of dilation given the scale factor k=5/4

• Reduction

• Enlargement

• Isometry

• None of these

Triangle ABC has vertices at A(2,3) B(-5,-1) C(0,5). Its image, Triangle A'B'C', has vertices at A'(4,6) B'(-10,-2) and C'(0,10). What is the scale factor?

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

• reflection
• translation
• rotation
• dilation

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

How many degrees was the figure rotated?

• 90 degrees counterclockwise 
• 180 degrees
• 90 degrees clockwise

a dilation with a scale factor 0<k<1 is called what?