Euler's quadrilateral theorem
Description
In any convex quadrilateral the sum of the squares of the four sides is equal to the sum of the squares of the two diagonals plus four times the square of the line segment connecting the midpoints of the diagonals.
Related formulasVariables
| a | Side (m) |
| b | Side (m) |
| c | Side (m) |
| d | Side (m) |
| p | Diagonal (m) |
| q | Diagonal (m) |
| x | Line segment connecting the midpoints of the diagonals (m) |