How to compute the second fundamental form of the parallel surface
37352
The Gaussian and Mean Curvatures of a Parallel Surface
106050
Finding a conformal map from the intersection of two disks to the unit disk.
88184
Finding the value of $k$ for parallel/orthogonal planes
56775
Finding minimal form -- Velleman exercise 1.5.7a
79727
Direct proof of non-flatness
105248
Why is the gradient of implicit surface the normal vector (i.e. parallel to the normal line)?
57660
Biliniear form to inner product
131080
Geometric representation of the sum of a Geometric Series
44887
The intersection of two parallel lines
104754
Parallelogram Law of Force Addition
81520
Polar form to cartesian
71074
The locus of the intersection point of two perpendicular tangents to a given ellipse
152364
How to compute the image of a polyhedron under a linear transformation
22017
Parametric equations for the plane through origin parallel to two vectors
106327
Prove, in this figure, that $EFGH$ is a parallelogram
105506
Finding the Total Curvature of Plane Curves
132996
Intersection of surface with parallel planes