Three-Dimensional Geometry

Three-Dimensional Geometry: Distance in 3D Space

Three-Dimensional Geometry: Distance in 3D Space

Understand the 3D distance formula by visualizing points in 3D space

Explore three-dimensional geometry concepts through visualizing points in 3D space. Calculate the distance between two points using the 3D distance formula and understand how coordinates relate to position in three-dimensional space.

Help & Instructions

How to Use This Learning Tool:
  1. View 3D Space: See the 3D coordinate system with origin at the corner
  2. Place Points: Click on the 3D visualization to place points A and B
  3. Calculate Distance: Click to calculate the distance between the two points
  4. Adjust Points: Move points to see how distance changes
  5. Analyze Formula: View the step-by-step calculation using the 3D distance formula
Learning Objectives:
  • Understand the 3D coordinate system
  • Learn to calculate distance between two points in 3D space
  • Visualize how coordinates determine position in 3D
  • Recognize real-world applications of 3D geometry

3D Space Visualization

Visualization of 3D coordinate system with points:

Distance Calculation

Distance between Point A and Point B:

Distance
-
d = √[(x₂-x₁)²+(y₂-y₁)²+(z₂-z₁)²]

Point Coordinates

Coordinates of points in 3D space:

3D Distance Formula

Step-by-step calculation:

1
Difference in X
2
Difference in Y
3
Difference in Z
4
Sum of Squares
5
Square Root
Point A Coordinates
(0,0,0)
Point B Coordinates
(0,0,0)
Dimensions
3D
Distance Units
Units
Understanding 3D Distance:

The distance between two points in three-dimensional space is calculated using an extension of the Pythagorean theorem. In 3D space, we need to account for differences in all three coordinates (x, y, and z) to find the straight-line distance between two points.

The Mathematics of 3D Distance

What is 3D Distance?

The distance between two points in three-dimensional space is the length of the straight line connecting them. It is calculated using the 3D distance formula, which is an extension of the Pythagorean theorem to three dimensions.

3D Distance Formula:
d = √[(x₂ - x₁)² + (y₂ - y₁)² + (z₂ - z₁)²]

Where (x₁, y₁, z₁) and (x₂, y₂, z₂) are the coordinates of the two points in 3D space.

Step-by-Step Calculation:
  1. Calculate the difference in x-coordinates: Δx = x₂ - x₁
  2. Calculate the difference in y-coordinates: Δy = y₂ - y₁
  3. Calculate the difference in z-coordinates: Δz = z₂ - z₁
  4. Square each difference: (Δx)², (Δy)², (Δz)²
  5. Sum the squares: (Δx)² + (Δy)² + (Δz)²
  6. Take the square root of the sum: √[(Δx)² + (Δy)² + (Δz)²]
Real-world Applications:

3D distance calculations are used in:

  • Architecture: Measuring distances in 3D building models
  • Engineering: Calculating distances between components in 3D space
  • Computer Graphics: Rendering 3D scenes and calculating object distances
  • Robotics: Path planning and obstacle avoidance in 3D environments
  • Physics: Calculating distances between particles in 3D space

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