2
$\begingroup$

Is there a method to calculate the vertices of a polygon given just 1 vertex of the polygon and its center point? I found this post maths - find vertices when 1 vertex and center point is given in polygon on the topic, but it's only for 2 dimensions. Can this be extrapolated to 3 dimensions? Thanks!

$\endgroup$

1 Answer 1

4
$\begingroup$

Given the center of a (regular) polygon and one of the vertices, you can find infinitely many polygons in three-dimensional space.

To get a unique polygon, you'll need (say) another vertex to define the plane the polygon rests in.

$\endgroup$
2
  • $\begingroup$ That makes sense. If I have a third point, the midpoint of an edge (this edge is connected to the given vertex), how can I calculate the other vertices of the polygon? $\endgroup$
    – namcap
    Jan 3, 2017 at 17:30
  • $\begingroup$ @namcap I’d build the a polygon in the $x$-$y$ plane centered on the origin (which is almost trivial to do) and then apply a transformation to move it into position. $\endgroup$
    – amd
    Jan 3, 2017 at 20:00

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .