Find the number of triangles formed by n lines.
129002
Number of triangles formed by $m$ lines
34029
Find intersection of pairs of straight lines
103172
showing certain vertices form an equilateral triangle
116405
Recurrence relation for right-angled triangles stuck-together
366
Can every triangle be divided into five isosceles triangles?
139039
Stars and Bars Combinatorics Problem
154274
How many triangles are there in the picture?
106485
Olympiad Geometry Problem
35083
Creating a Grid on a polygon and find number of points in each grid
54749
How to find the number of perfect matchings in complete graphs?
111733
Finding Vertices, Edges, Faces, and Tris using Python
70402
Geometry Triangle Question 3
149435
Arrange 10 points on five lines where each line(intersecting) has exactly 4 points
37754
Number of vertices of a complete graph with $n$ edges
68090
Can we find incentre of a triangle by using equation of lines?
97574
Jordan form, number of blocks.
136563
Number of triangles in a regular polygon