Similar Figures

Front

What are similar figures?

Back

Two figures that have the same shape but may differ in size.

Front

What are corresponding sides in similar figures?

Back

Sides of two similar figures that are in the same relative position.

Front

If two triangles are similar, what can be said about their angles?

Back

The corresponding angles of similar triangles are equal.

Front

How do you find the missing side length in similar figures?

Back

Use the ratio of the lengths of corresponding sides.

Front

What is the scale factor in similar figures?

Back

The ratio of the lengths of corresponding sides of two similar figures.

Front

If the scale factor of two similar figures is 2:3, what does this mean?

Back

For every 2 units in the first figure, there are 3 units in the second figure.

Front

What is the relationship between the areas of two similar figures?

Back

The ratio of their areas is the square of the ratio of their corresponding side lengths.

Front

If one side of a triangle is 10 cm and the corresponding side of a similar triangle is 15 cm, what is the scale factor?

Back

The scale factor is 10:15 or 2:3.

Front

What is the formula for finding the area of a triangle?

Back

Area = 1/2 * base * height.

Front

How do you determine if two figures are similar?

Back

Check if their corresponding angles are equal and the lengths of corresponding sides are proportional.