diff --git a/src/triangle/_impl/_tri_ear_clipping_impl.scad b/src/triangle/_impl/_tri_ear_clipping_impl.scad
index fa6e1f72..55aabb19 100644
--- a/src/triangle/_impl/_tri_ear_clipping_impl.scad
+++ b/src/triangle/_impl/_tri_ear_clipping_impl.scad
@@ -13,10 +13,9 @@ function _triangulate_snipable(shape_pts, u, v, w, n, indices, epsilon = 0.0001)
     let(
         a = shape_pts[indices[u]],
         b = shape_pts[indices[v]],
-        c = shape_pts[indices[w]],
-        determinant = cross([b.x - a.x, b.y - a.y],  [c.x - a.x, c.y - a.y])
+        c = shape_pts[indices[w]]
     )
-    epsilon <= determinant && _triangulate_snipable_sub(shape_pts, n, u, v, w, a, b, c, indices);
+    epsilon <= cross(b - a, c - a) && _triangulate_snipable_sub(shape_pts, n, u, v, w, a, b, c, indices);
     
 function _triangulate_snipable_sub(shape_pts, n, u, v, w, a, b, c, indices, p = 0) = 
     p == n || (
diff --git a/src/triangle/tri_incenter.scad b/src/triangle/tri_incenter.scad
index 91de127f..f1d45f70 100644
--- a/src/triangle/tri_incenter.scad
+++ b/src/triangle/tri_incenter.scad
@@ -15,13 +15,14 @@ function tri_incenter(shape_pts) =
         pc = shape_pts[2],
 		a = norm(pb - pc),
 		b = norm(pc - pa),
-		c = norm(pa - pb)
+		c = norm(pa - pb),
+        abc = [a, b, c] 
     )
     (len(pa) == 2 ? [
-        (a * pa.x + b * pb.x + c * pc.x), 
-        (a * pa.y + b * pb.y + c * pc.y)
+        abc * [pa.x, pb.x, pc.x], 
+        abc * [pa.y, pb.y, pc.y]
     ] : [
-        (a * pa.x + b * pb.x + c * pc.x), 
-        (a * pa.y + b * pb.y + c * pc.y),
-        (a * pa.z + b * pb.z + c * pc.z)
+        abc * [pa.x, pb.x, pc.x], 
+        abc * [pa.y, pb.y, pc.y],
+        abc * [pa.z, pb.z, pc.z]
     ]) / (a + b + c);
\ No newline at end of file