Similar Figures & Scale Factor

Front

What does it mean for sides in similar figures?

Back

Sides in similar figures must be proportional.

Front

If a tree is 12 feet tall and casts a shadow 9 feet long, and a building casts a shadow 24 feet long, how tall is the building?

Back

32 feet

Front

What must be true about the angles of similar triangles?

Back

They have corresponding angles that are congruent.

Front

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

Back

Unit Rate

Front

If two figures are similar, what can we say about their corresponding sides?

Back

Their corresponding sides are proportional.

Front

What is the scale factor if two similar figures have a ratio of 2:3?

Back

The scale factor is 2/3.

Front

How do you find the missing side in similar figures?

Back

Set up a proportion using the known sides.

Front

What is the relationship between the areas of two similar figures with a scale factor of 1:4?

Back

The area ratio is 1:16.

Front

If a triangle has sides of 3, 4, and 5, what are the sides of a similar triangle with a scale factor of 2?

Back

6, 8, and 10.

Front

What is the definition of similar figures?

Back

Figures that have the same shape but may be different sizes.