diff --git a/circle_area.py b/circle_area.py
index 513d6f7..80cffef 100644
--- a/circle_area.py
+++ b/circle_area.py
@@ -1,6 +1,9 @@
 # circle_area.py
 # --------------
 # By MWC Contributors
+import math
 
 print("This program will calculate the area of a circle.")
 radius = float(input("What is the circle's radius? "))
+area = math.pi * radius * radius
+print(area)
\ No newline at end of file
diff --git a/greetings.py b/greetings.py
index 2d878a6..f32240c 100644
--- a/greetings.py
+++ b/greetings.py
@@ -2,6 +2,6 @@
 # ------------
 # By MWC contributors
 
-my_name ="Chris"
+my_name = input('What is your name? ')
 greeting = "Hello, " + my_name
 print(greeting)
diff --git a/shapes.py b/shapes.py
index 731ec39..d6eadaf 100644
--- a/shapes.py
+++ b/shapes.py
@@ -5,7 +5,19 @@
 from turtle import *
 
 def triangle(side_length):
-    pass
+    forward(side_length)
+    right(120)
+    forward(side_length)
+    right(120)
+    forward(side_length)
+    right(120)
 
 def rectangle(height, width):
-    pass
+    forward(width)
+    right(90)
+    forward(height)
+    right(90)
+    forward(width)
+    right(90)
+    forward(height)
+    right(90)