Finding Scale Factor

Front

If the scale factor is equal to 1, the copy is ________ the original.

Back

the same as

Front

What is the scale factor from ABCD to MNOP if the dimensions of ABCD are 6 units and MNOP are 4 units?

Back

2/3

Front

The two rectangles are scale drawings. If the larger rectangle has a length of 30 units and the smaller has a length of 20 units, what is the scale factor?

Back

2/3

Front

What is the scale factor from ΔDEF to ΔABC if the sides of ΔDEF are 5 units and the corresponding sides of ΔABC are 10 units?

Back

1/2

Front

What is the scale factor from the small fry to the large fry if the small fry is 2 inches and the large fry is 6 inches?

Back

3

Front

Define scale factor.

Back

The ratio of the length of a side of a scaled figure to the length of the corresponding side of the original figure.

Front

If a shape is enlarged by a scale factor of 2, what happens to its area?

Back

The area increases by a factor of 4.

Front

If a shape is reduced by a scale factor of 1/2, what happens to its perimeter?

Back

The perimeter is also reduced by a factor of 1/2.

Front

How do you find the scale factor between two similar figures?

Back

Divide the length of a side of the new figure by the length of the corresponding side of the original figure.

Front

What is the scale factor if a triangle's sides are 3 cm, 4 cm, and 5 cm and the corresponding sides of a similar triangle are 6 cm, 8 cm, and 10 cm?

Back

2