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The Distance formula exercise appears under the 8th grade (U.S.) Math Mission and High school geometry Math Mission. This exercise introduces and applies the distance formula.

## Types of Problems

There is one type of problem in this exercise:

1. Find the distance between the points on the coordinate plane: This problem has a coordinate plane and has two points labeled. The user is expected to use the distance formula to find the exact distance.

## Strategies

The distance formula and an ability to reduce radicals are needed to ensure success on this exercise.

1. The distance formula is ${\sqrt{((x_2-x_1)^2+(y_2-y_1)^2)}}$.
2. The distance formula is precisely the Pythagorean Theorem on the rise and the run of the slope.

## Real-life applications

1. The distance formula is useful in architecture and drafting.
2. The distance formula can be used to find straight-line distance in surveying or mapping.