📝Unit 2 Practice 2: Similarity & Similar Figures Practice

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape and their corresponding angles are equal, while the ratios of their corresponding sides are equal.

Front

What is the symbol for 'is similar to'?

Back

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Front

If two triangles have angles measuring 30°, 60°, and 90°, and another triangle has angles measuring 30°, 60°, and 90°, are they similar? Why?

Back

Yes, they are similar because they have the same shape and corresponding angles are equal.

Front

What is the relationship between corresponding sides of similar figures?

Back

The ratios of the lengths of corresponding sides of similar figures are equal.

Front

If Triangle A has sides of lengths 3, 4, and 5, and Triangle B has sides of lengths 6, 8, and 10, are they similar?

Back

Yes, they are similar because the ratios of corresponding sides (3:6, 4:8, 5:10) are all equal to 1:2.

Front

What is the first step to determine if two figures are similar?

Back

Check if their corresponding angles are equal.

Front

If two figures are similar, what can be said about their areas?

Back

The ratio of their areas is the square of the ratio of their corresponding sides.

Front

What does it mean for angles to be congruent?

Back

Congruent angles have the same measure.

Front

If two triangles are similar and the length of one side of the first triangle is 5 and the corresponding side of the second triangle is 10, what is the scale factor?

Back

The scale factor is 2.

Front

What is a proportion in the context of similar figures?

Back

A proportion is an equation that states that two ratios are equal.