Similar Notation & Scale Factor Flashcard

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine how much a figure is enlarged or reduced.

Front

If the scale factor is greater than one, what happens to the figure?

Back

The figure will be enlarged.

Front

If the scale factor is less than one, what happens to the figure?

Back

The figure will be reduced.

Front

What is the formula for calculating the scale factor?

Back

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size, and their corresponding angles are equal.

Front

How do you find the corresponding angle in similar figures?

Back

The corresponding angle in similar figures is the angle that is in the same position in both figures.

Front

What is the scale factor from triangle ABC to triangle DEF if the sides of DEF are twice as long as those of ABC?

Back

The scale factor is 2/1.

Front

What is the scale factor from triangle DEF to triangle ABC if the sides of DEF are twice as long as those of ABC?

Back

The scale factor is 1/2.

Front

If quadrilateral OPQR is similar to quadrilateral STUV, what is the corresponding angle to angle P?

Back

The corresponding angle to angle P is angle T.

Front

What is the relationship between the lengths of corresponding sides in similar figures?

Back

The lengths of corresponding sides in similar figures are proportional to the scale factor.