Geometry Proportions

Front

What is a ratio?

Back

A comparison of two (or more) units.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If the angles of a triangle are in the ratio 2:4:9, how do you find the measures of the angles?

Back

Let the angles be 2x, 4x, and 9x. Then, 2x + 4x + 9x = 180. Solve for x.

Front

What is the lowest term of the fraction 6/12?

Back

1/2.

Front

Back

Cross-multiply to get 40 * 6 = 15 * (x + 1). Solve for x.

Front

What is the ratio of oatmeal to chocolate chip cookies if there are 5 oatmeal and 6 chocolate chip cookies?

Back

5:6.

Front

What does it mean for two ratios to be equivalent?

Back

It means that they represent the same relationship between quantities.

Front

How do you convert a fraction to a ratio?

Back

Front

What is the extended ratio of 2:4:9?

Back

It represents the relationship between three quantities, where the first is 2 parts, the second is 4 parts, and the third is 9 parts.

Front

How do you simplify the ratio 8:12?

Back

Divide both sides by their greatest common divisor, which is 4, resulting in 2:3.