Scale Factor Flashcard 2

Front

Scale factor is the number that you _______ to calculate the new dimension.

Back

multiply

Front

If the linear scale factor is 4, what is the area scale factor?

Back

16

Front

A scale factor of 1/2 is used to change the dimensions of a rectangle with a length of 7 centimeters and a width of 5 centimeters. What is the perimeter of the resulting rectangle?

Back

12

Front

A scale factor of 2 is used to enlarge the dimensions of a square. What is the effect of this change on the area of the square?

Back

The area will be 4 times larger.

Front

Dimensions of a rectangular photo are 3.5 in. x 5 in. Enlarged by a scale factor of 2.5. What is the perimeter of the new photo?

Back

42.5 in.

Front

Two shapes are ___________ if their corresponding sides are proportional and their corresponding angles are congruent.

Back

Similar

Front

Angle Angle Criterion for Triangles: If two angles of one triangle are congruent to two angles of another triangle, then the two triangles are ___________________.

Back

similar

Front

These two triangles are:

similar

,

not similar

,

not enough information

Back

similar

Front

Stefano holds up an 8-inch pencil 32 inches from his eye. The pencil fills the image of a sculpture that is 40 feet away. How tall is the sculpture?

Back

10