diff --git a/voussoir/triangles.scad b/voussoir/triangles.scad
new file mode 100644
index 0000000..fe4e771
--- /dev/null
+++ b/voussoir/triangles.scad
@@ -0,0 +1,39 @@
+module right_triangle(width, height, center=false)
+{
+    if (center)
+    {
+        polygon([
+            [-width/2, -height/2],
+            [width/2, -height/2],
+            [width/2, height/2]
+        ]);
+    }
+    else
+    {
+        polygon([
+            [0, 0],
+            [width, 0],
+            [0, height]
+        ]);
+    }
+}
+
+module isoscelese_triangle(width, height, center=false)
+{
+    if (center)
+    {
+        polygon([
+            [-width/2, -height/2],
+            [0, height/2],
+            [width/2, -height/2]
+        ]);
+    }
+    else
+    {
+        polygon([
+            [0, 0],
+            [width, 0],
+            [width/2, height]
+        ]);
+    }
+}