ce "> Distance Formula-8th Grade Math
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Common Core Standard: 8.G.B.8   8th Grade Math
For horizontal or vertical lines, the length can be obtained by counting.

To find the distance from A  to  B  count from -4 to 1 which equals 5 units

To find the distance from P to Q count from 3 to -3 which equals 6 units

How can you use the Pythagorean Theorem to find distance?

How do you find the distance of a vertical line on graph?

How do you find the distance of a horizntal line on a graph?

If a right triangle has leg lengths of 6 and 8 units,how do you find the length of the hypotenuse?

What is the distance between the ordered pairs (-4,5) and (4,2)?

What is the distance formula?

Which number do you use for x and which number do you use for y ?

### If you have trouble remembering the distance formula then you can find the distance using the Pythagorean Theorem.

A
(-3,0)
(1,3)
B
Count to the left 4 spaces for A and up 3 spaces for B
distance from A to B
distance from A to B
A
(-3,0)
B
(1,3)
d=
What is the distance from A to B?
Using the ordered pairs:
(-3,0) and (1,3)

## Distance Formula =

​​Unfortunately, this counting approach does NOT work for
a diagonal segment.

To find the distance between two points on a Cartesian coordinate plane, use the coordinates of these ordered pairs, and the Distance formula below.​
In Coordinate Geometry, there are many methods to find distances of line segments.
Let's examine some of the methods: