Find a four-point polygon perimeter from coordinates
Result
Perimeter
Step-by-Step Derivation
Coordinate Perimeter Formula
P = d₁₂ + d₂₃ + d₃₄ + d₄₁
Coordinate perimeter adds the straight-line distance of each side. Each side uses the distance formula, and the final side closes the polygon by returning to the first point.
⚠Enter vertices in boundary order. Crossing or random order can produce a different perimeter.
How Coordinate Perimeter Works
The polygon perimeter is the total length around its outside. In coordinates, each side length is found from consecutive points and then added.
Ordered Vertices
Use points around the boundary.
Side Lengths
Each side uses the distance formula.
Closing Side
The last point connects back to the first.
Total Perimeter
Add all side lengths for the final result.
💡 Example: For rectangle (0,0),(4,0),(4,3),(0,3), perimeter = 14.
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