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 formulas

Variables

aSide (m)
bSide (m)
cSide (m)
dSide (m)
pDiagonal (m)
qDiagonal (m)
xLine segment connecting the midpoints of the diagonals (m)