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Triangle Calculator
Solve any triangle from three sides or two sides and the angle between them: angles, area, perimeter and type.
Midpoint Calculator
Find the midpoint between two points by averaging their x and y coordinates.
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How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
Midpoint formula
M = ((x₁ + x₂) ÷ 2, (y₁ + y₂) ÷ 2)
Example: (2, 3) and (8, 11) → (5, 7). To find an endpoint from a midpoint: x₂ = 2·Mx − x₁ and y₂ = 2·My − y₁.
Frequently asked questions
How do I find a missing endpoint?
Double the midpoint and subtract the known endpoint, for each coordinate.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
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