Given four nodes forming a quadrilateral, how do I find the node at the intersection of the diagonals
2518
TikZ: Intersection of two lines
142862
Intersection of an ellipsoid and plane in parametric form
8469
Dividing an equilateral triangle into N equal (possibly non-connected) parts
73832
How to find the maximum diagonal length inside a dodecahedron?
113680
Finding intersection of two graphs
123526
Finding determinant for a matrix with one value on the diagonal and another everywhere else
84462
Finding location of a point on 2D plane, given the distances to three other know points
103172
showing certain vertices form an equilateral triangle
56555
Create a block matrix with four quadrants
71074
The locus of the intersection point of two perpendicular tangents to a given ellipse
60795
Quadrilateral's area problem
54779
A simple algorithm for polygon intersection
101493
Prove that one diagonal of a quadrilateral bisects the other
73622
How to find chromatic number of the $n$-dimensional hypercube $Q_n$?
43397
Linear algebra - find all possible positions of the third corner?
44070
Recurrence  for number of regions formed by diagonals of a convex polygon.
93170
Find the side of an equilateral triangle given only the distance of an arbitrary point to its vertices