I created functions and did math using python

checkpoint 1
-A name is like an identifier that is empty. It only gains importance once it is assigned a value, which is the data
stored under the name. It's like the net worths. people are just people until you find out their networth.
-it's easier to refer back to and connect your code when using variables. It also allows you to change the values
without having to change all your code

checkpoint 2
-a function is similar to a variable because it makes it easier to reference a set of code. With it, you don't need to
repeatedly write out the same few lines of code
-functions are like mini projects in a big scheme. You can solely achieve the big picture by completing functions. The
best part of is that you can check if a function is working wihout having to run all your code. the names lab is a good
example, I tested the shapes as I wrote the functions and once they were done, I could run the drawing.

circle_area.py

@@ -4,3 +4,8 @@
 
 print("This program will calculate the area of a circle.")
 radius = float(input("What is the circle's radius? "))
+import math
+
+area= math.pi*radius**2
+print("area is "+ str(area))
+

greetings.py

@@ -2,6 +2,6 @@
 # ------------
 # By MWC contributors
 
-my_name ="Chris"
+my_name ="Ilma"
 greeting = "Hello, " + my_name
 print(greeting)

shapes.py

@@ -5,7 +5,23 @@
 from turtle import *
 
 def triangle(side_length):
-    pass
+    pendown()
+    right(90)
+    for x in range(3):
+        forward(side_length)
+        right(120)
+    return
+    
+    
 
 def rectangle(height, width):
-    pass
+    pendown()
+    right(90)
+    for x in range(2):
+        forward(height)
+        right(90)
+        forward(width)
+        right(90)
+    return
+    
+