diff --git a/assets/js/shapes.js b/assets/js/shapes.js
index e4351ba..3ec6d71 100644
--- a/assets/js/shapes.js
+++ b/assets/js/shapes.js
@@ -1,31 +1,89 @@
 function getLine(length) {
-    // TODO - write method definition here
+
+  let str = "";
+  for(let spot=1; spot<=length; spot++) {
+    str+= "*";
+  }
+  return str;
 }
 
 
 
 function getBox(width, height) {
-    // TODO - write method definition here
+
+  let str = "";
+  for(let level=1; level<=height; level++)
+     str += getLine(width) + "\n"; 
+  return str;
+
 }
 
 
 
 function getBottomLeftTriangle(length) {
-    // TODO - write method definition here
+
+  let str = "";
+  
+  for(let level = 1; level<=length; level++)
+    str += getLine(level) + (level!=length ? "\n" : "");
+
+  return str;
 }
 
 
+
 function getUpperLeftTriangle(length) {
-    // TODO - write method definition here
+  
+  let str = "";
+  
+  for(let level=length; level > 0; level--)
+    str += getLine(level) + (level!=1 ? "\n" : "");
+
+  return str;
 }
 
 
 
 function getPyramid(length) {
-    // TODO - write method definition here
+
+  let str = "";
+  
+  for(let level=1; level<=length; level++) {
+
+    let spaces = "";
+    for(let i=0; i<length-level; i++)
+      spaces += " ";
+
+    let thisLevelWidth = 2*level - 1;    
+    str += spaces + getLine(thisLevelWidth) + spaces + (level<length ? "\n" : "");
+
+  }
+
+  return str;
 }
 
 
 function getCheckerboard(width, height) {
-    // TODO - write method definition here
+
+  let str = "";
+
+  for(let level=1; level<=height; level++) {
+    
+    let isOddLayer = (level % 2) == 1;
+    
+    for(let slot=1; slot<=width; slot++) {
+      
+      let isOddSlot = (slot % 2 == 1);
+      
+      if (isOddLayer)
+        str += isOddSlot ? " " : "*";
+      else
+        str += isOddSlot ? "*" : " ";
+    
+    }
+
+    str += "\n";
+  }
+
+  return str;
 }