Intro Dilations

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Does the image show a dilation?

• Yes

• No

Dilation changes a shape's __________?

• Size

• Position

• Form

• Orientation

Which of the following statements is true about dilations?

• Dilations do not affect the size or shape of a figure.

• Dilations change the shape of a figure without changing its size.

• Dilations change the size of a figure without changing its shape.

What is the scale factor?

What transformation doesn’t always produce an image that is congruent to its pre-image?

*Explain your answer on your answer sheet*

• Translations

• Rotations

• Reflections

• Dilation

The point (2, -3) becomes (8, -12) after undergoing a dilation. What will the point (-4, 6) become under the same dilation?

A rectangular photo with dimensions of 1.5 inches wide by 2 inches long is enlarged to a length of 8 inches. What is the width of the enlarged print?

*Hint: Draw a picture*

• 3

• 6

• 7.5

• 16