total no. of different complete line sequences that can be drawn using n points in a circle?
58508
Number of ways to pair off $2n$ points such that no chords intersect
133264
Constructing a circle through a given point, tangent to a given line, and tangent to a given circle
147928
How to draw Fractal images of iteration functions on the Riemann sphere?
98845
Upper bound on the number of charts needed to cover a topological manifold
29111
Counting number of lines connected to point?
53152
Find a circle's radius with three known tangent lines
73816
Numbers of draws on a modified Bernouilli process
12070
Probability that n points on a circle are in one semicircle
80670
'Lines' in the Euler phi graph
109740
Bresenham's line algorithm
127215
Number of points on a line in a finite projective plane
76001
Construct a fourth circle tangent to 3 circles forming a tangency chain
46379
How can I draw a spiral that gets arbitrary close to a unit circle?
82372
Calculate possible lines from points
39164
The set of limit points of the sequence $1,\frac12,\frac14,\frac34,\frac18,\frac38,\frac58,\frac78,\frac1{16},\frac3{16},\ldots$
78196
Draw all the circles that touch the x-axis and a unit circle
45456
Do the digits of $\pi$ contain every possible finite-length digit sequence?