7.1 - 7.4 Proportions

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 polygons are similar?

Back

Two polygons are similar if their corresponding angles are equal and the lengths of their corresponding sides are proportional.

Front

What is the similarity statement for similar triangles?

Back

The similarity statement for similar triangles indicates which triangles are similar, such as ΔABC ~ ΔDEF.

Front

What is the Side-Angle-Side (SAS) similarity criterion?

Back

The SAS similarity criterion states that if an angle of one triangle is equal to an angle of another triangle and the sides including those angles are in proportion, then the triangles are similar.

Front

What is the Angle-Angle (AA) similarity criterion?

Back

The AA similarity criterion states that if two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

Front

What is the definition of similar figures?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then isolate the variable.

Front

What is the Cross-Multiplication Property?

Back

The Cross-Multiplication Property states that if a/b = c/d, then a*d = b*c.

Front

What is the definition of corresponding sides in similar polygons?

Back

Corresponding sides in similar polygons are the sides that are in the same relative position in each polygon.

Front

What is the definition of corresponding angles in similar polygons?

Back

Corresponding angles in similar polygons are the angles that are in the same relative position in each polygon.