Fix 404s, some redirects and some broken links.

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2018-05-30 16:49:21 -07:00
parent ec28f3d429
commit f064e4f7a7
22 changed files with 45 additions and 37 deletions
+1 -1
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@@ -223,7 +223,7 @@ Some examples of planes
-----------------------
Here is a simple example of what planes are useful for. Imagine you have
a `convex <http://www.mathsisfun.com/definitions/convex.html>`__
a `convex <https://www.mathsisfun.com/definitions/convex.html>`__
polygon. For example, a rectangle, a trapezoid, a triangle, or just any
polygon where no faces bend inwards.