Dilation in Coordinate Geometry

What is the process that manipulates a polygon on a plane or coordinate system?

• Reflection

• Translation

• Rotation

• Dilation

Which of the following is an application of dilation?

• Creating model toys

• Building bridges

• Designing software

• Cooking recipes

In Example 1, what is the scale factor if triangle ABC becomes triangle A'B'C' and the image is larger?

• 2

• 1

• 3

• 1/2

In Example 1, what is the ratio of the lengths A'B' to AB?

• 3:6

• 6:3

• 4:2

• 2:4

In Example 2, what is the scale factor if triangle ABC becomes triangle A'B'C' and the image is smaller?

• 1

• 3

• 2

• 1/2

In Example 2, what is the ratio of the lengths A'B' to AB?

• 4:2

• 4:8

• 8:4

• 2:4

In Example 3, if the scale factor is 2/3 and the length of A'B' is 4, what is the length of AB?

• 8

• 2

• 4

• 6

In Example 3, what operation is used to isolate segment AB in the equation AB * (2/3) = 4?

• Addition

• Subtraction

• Multiplication by 3/2

• Division by 2/3

In Example 4, if the scale factor is 3 and the length of A'B' is 6, what is the length of AB?

• 6

• 2

• 3

• 1

In Example 4, what is the inverse of the scale factor 3 used to isolate segment AB?

• 1/3

• 1/2

• 3

• 2/3