WEEK 16-Scale Factor and Dilations

Front

What are sides that are in the same position in similar figures called?

Back

Corresponding Sides

Front

What is the scale factor if the length of a side in ΔDEF is doubled to form ΔABC?

Back

2

Front

What is an example of a reduction in scale factor?

Back

k = 1/2

Front

Does a dilation produce a congruent figure?

Back

False

Front

How do you write the algebraic notation when the scale factor is 1/2?

Back

(x, y) goes to (1/2x, 1/2y)

Front

What is the definition of scale factor?

Back

The ratio of the lengths of corresponding sides of two similar figures.

Front

If a triangle is dilated by a scale factor of 3, what happens to its area?

Back

The area is multiplied by 9 (3^2).

Front

What is the effect of a scale factor greater than 1 on a figure?

Back

It enlarges the figure.

Front

What is the effect of a scale factor less than 1 on a figure?

Back

It reduces the figure.

Front

What are corresponding angles?

Back

Angles in the same position in similar figures that are equal.