Looking for an inscribed quadrangle in a rectangle with minimal perimeter
103158
The smallest quadrangle inscribed in a rectangle
42945
Find the minimal number of guard points of polygon
109784
Coloring a region bounded by curves
67872
Isometric bulging grid
83596
A simple proof that a polygon circumscribing a circle overestimates its perimeter
85184
Maximize area of a triangle with fixed perimeter
1802
Puzzle: Find largest rectangle (maximal rectangle problem)
138387
Using [midway] to label a curved path at its centre
46621
Relationship between the side lengths of a tetrahedron and an inscribed tetrahedron with vertices at the centroids
104152
Stars and bars with lower bound on individual parts
126424
The square of minimum area with three vertices on a parabola
132402
Find 2nd leg of right triangle with known leg and perimeter
149830
What's the name of each pseudo-rectangle in a spherical surface?
96686
Determine the area of a regular octagon with vertices on the unit circle
152236
What is the optimal path between $2$ fixed points around an invisible obstructing wall?
53499
Equilateral triangle inscribed in a triangle
69235
padded boundary of convex hull