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# What does the "distance between two points" mean?

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In math, the term "distance between two points" refers to the length of a straight line drawn between the two points on an x-y axis. The distance can be determined by finding the change in the y axis and the the x axis and fitting them into the Pythagorean theorem.

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The formula for finding the distance between two points in Euclidean geometry, a? + b? = c?, is the same formula that is used to find the length of the hypotenuse of a right triangle. In a three-dimensional plane, the distance between two points must take in the change in the x, y and z coordinates.

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## Related Questions

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The directrix of a parabola refers to a straight line that is drawn perpendicular to the axis of symmetry of a parabola. This line does not touch the parabola at any point. In addition, it is a horizontal line if the axis is vertical.

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Parallel lines are two lines that are the same distance apart along their length. They never touch one another. They look like the outer lines of a road or the edges of a rail track.

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People use the Pythagorean Theorem and distance formula to determine length in a variety of everyday situations, including the purchase a family television set, the creation of code for collision detection in a video game, or the construction of a building.