Similar Figures & Scale Factor

Front

What is a rate where the comparison is to one unit?

Back

Unit Rate

Front

What is the term that best describes the relationship 3 : 5?

Back

Ratio

Front

In similar triangles, what must be true about their corresponding angles?

Back

They are congruent.

Front

If two triangles are similar, and one side measures 12 and the corresponding side in the other triangle measures 18, what is the scale factor?

Back

1.5

Front

What is the scale factor if triangle ABC is similar to triangle DEF and the sides of ABC are 4, 6, and 8 while the sides of DEF are 8, 12, and 16?

Back

2

Front

If line CB corresponds with line RQ in similar triangles, what can we say about their lengths?

Back

They are proportional.

Front

What is the definition of similar figures?

Back

Figures that have the same shape but not necessarily the same size.

Front

If the scale factor of two similar figures is 3, and the length of a side in the smaller figure is 5, what is the length of the corresponding side in the larger figure?

Back

15

Front

What is the relationship between the areas of two similar figures if the scale factor is k?

Back

The ratio of their areas is k².

Front

If triangle XYZ is similar to triangle ABC, and the length of side XY is 10 and side AB is 5, what is the scale factor?

Back

2