Giving the formula of a line through points in projective geometry
2597
Line between points in projective space?
156791
Equation of a plane containing a point and perpendicular to a line
71074
The locus of the intersection point of two perpendicular tangents to a given ellipse
35438
Ordering $n$ points in $\Bbb{R}^d$ so that every three consecutive points determine an acute angle
86640
Equation of a line that is tangent to a curve at point
82372
Calculate possible lines from points
157985
Trying to understand formula for counting regions of hyperplane arrangements in $\mathbb{R}^2$
59431
slope of a line tangent through a point
106081
The Projection to a Projective Line is Holomorphic
85274
Point reflection over a line
109483
Straight lines - product of slope of perpendicular lines.
123304
Locus of the points on complex plane
47342
Figure out if a fourth point resides within an angle created by three other points
62260
Rational Coordinates with two intersecting lines
140519
How to determine the point of intersection of two lines?
74977
When does $az + b\bar{z} + c = 0$ represent a line?
26790
Proving the geometric sum formula by induction