diff --git a/sketch.js b/sketch.js
index fb861a2..238d16d 100644
--- a/sketch.js
+++ b/sketch.js
@@ -13,7 +13,7 @@ const SURFACE_EARTH = 2;
 let surface = SURFACE_CIRCLES;
 let physics = false;
 let skeleton = false;
-let polyhedron = false;
+let polytope = false;
 
 let aside_size;
 
@@ -53,7 +53,7 @@ function draw() {
 
   draw_charges(sphere_radius);
   if (skeleton) draw_skeleton(sphere_radius);
-  if (polyhedron) {
+  if (polytope) {
     if (physics || faces.length === 0) find_faces();
     draw_faces(sphere_radius);
   }
@@ -70,7 +70,7 @@ function find_faces() {
   for (let i = 2; i < charges.length; i += 1) {
     for (let j = 1; j < i; j += 1) {
       for (let k = 0; k < j; k += 1) {
-        // Check if p1 p2 p3 form a face of the convex polyhedron
+        // Check if p1 p2 p3 form a face of the convex polytope
         // enclosing all vertices ...
         const p1 = charges[i].position;
         const p2 = charges[j].position;
@@ -97,7 +97,7 @@ function find_faces() {
             // If L intersects the plane, q1 and q2 are on
             // opposite sides of the plane generated by p1 p2 p3,
             // so p1 p2 p3 can't be a face.  If we want the
-            // polyhedron to be convex.  Which we do.
+            // polytope to be convex.  Which we do.
             //
             // A point k is on the plane generated by p1 p2 p3 iff
             // dot(k - p1, normal) = 0.  Let n := normal.
@@ -269,7 +269,7 @@ function keyPressed() {
   } else if (key == 'f') {
     skeleton = !skeleton;
   } else if (key == 'g') {
-    polyhedron = !polyhedron;
+    polytope = !polytope;
   } else if (key >= '0' && key <= '9') {
     make_charges(int(key));
     faces = [];