Fix descriptions

bootcamp_content/projects/drawing/exercises/jumbled-house/introduction.md

@@ -15,3 +15,13 @@ Try and place each piece in the order they're listed below. When everthing is co
 - The windows are both the same size, with have a width of 12 and a height of 13. They both sit 5 from the top of the house frame, and 10 inset from the sides.
 - The door is 14 wide and 18 tall, and sits at the bottom of the house in the center.
 - The little door knob has a radius of 1, is inset 1 from the right, and is vertically centered in the door.
+
+### Functions
+
+The house uses the following functions:
+
+- `circle(x, y, radius)`
+- `rectangle(x, y, width, height)`
+- `ellipse(center_x, center_y, radius_x, radius_y)`
+- `triangle(x1,y1, x2,y2, x3,y3)`
+- `fill_color_hex(hex)`

bootcamp_content/projects/drawing/exercises/penguin/introduction.md

@@ -14,9 +14,9 @@ For the nose, you should **change** the middle coordinates of the triangle. Don'
 
 The functions used in this exercise are:
 
-- `circle(x, y, radius)`
-- `rectangle(x, y, height, width)`
-- `ellipse(x, y, radius_x, radius_y)`
+- `circle(center_x, center_y, radius)`
+- `rectangle(x, y, width, height)`
+- `ellipse(center_x, center_y, radius_x, radius_y)`
 - `triangle(x1,y1, x2,y2, x3,y3)`
 - `fill_color_hex(hex)`
 

bootcamp_content/projects/weather/exercises/cloud-rain-sun/introduction.md

@@ -9,9 +9,9 @@ Your shapes should sit just inside the lines.
 
 You'll need to use the following functions to draw things:
 
-- `circle(x, y, radius)`
-- `rectangle(x, y, height, width)`
-- `ellipse(x, y, radius_x, radius_y)`
+- `circle(center_x, center_y, radius)`
+- `rectangle(x, y, width, height)`
+- `ellipse(center_x, center_y, radius_x, radius_y)`
 
 You can use whatever colors your like for the various components, and you can change color using either of the `fill_color` functions to change color: