Proportions/Similar Figure Review (Accel. PreAlgebra)

Front

What is a proportion?

Back

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

Front

How do you determine if two figures are similar?

Back

Two figures are similar if their corresponding angles are equal and their corresponding sides are proportional.

Front

What is the scale factor in a scale drawing?

Back

The scale factor is the ratio of a length in the drawing to the corresponding length in the actual object.

Front

If a scale drawing uses a scale of 1 unit: 5 feet, how many feet does 1 unit represent?

Back

1 unit represents 5 feet.

Front

How do you calculate the actual distance using a scale?

Back

Multiply the distance on the map by the scale factor.

Front

What is the formula for finding the actual distance if the scale is given?

Back

Actual Distance = Distance on Map × Scale Factor.

Front

If a room is 20 feet wide and the scale is 1 unit: 5 feet, how wide is the room in the scale drawing?

Back

The room is 4 units wide in the scale drawing.

Front

What does it mean for sides to be proportional?

Back

Sides are proportional if the ratios of their lengths are equal.

Front

If two similar triangles have sides of lengths 3 cm and 6 cm, what is the scale factor?

Back

The scale factor is 1:2.

Front

What is the relationship between the angles of similar figures?

Back

The corresponding angles of similar figures are equal.