diff --git a/Documentation1.md b/Documentation1.md
deleted file mode 100644
index 28f94fa..0000000
--- a/Documentation1.md
+++ /dev/null
@@ -1,19 +0,0 @@
-# Name: 
-
-## Examples:
-Insert examples here.
-
-## Description:
-Insert description here
-
-## Syntax:
-Demonstrate syntax here
-
-##Parameters: 
-Name and describe parameters here
-
-##Returns:
-What type of data does it return?
-
-##Other notes:
-Anything else?
diff --git a/Documentation2.md b/Documentation2.md
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--- a/Documentation2.md
+++ /dev/null
@@ -1,19 +0,0 @@
-# Name: 
-
-## Examples:
-Insert examples here.
-
-## Description:
-Insert description here
-
-## Syntax:
-Demonstrate syntax here
-
-##Parameters: 
-Name and describe parameters here
-
-##Returns:
-What type of data does it return?
-
-##Other notes:
-Anything else?
diff --git a/Documentation3.md b/Documentation3.md
index 28f94fa..73105c9 100644
--- a/Documentation3.md
+++ b/Documentation3.md
@@ -1,4 +1,4 @@
-# Name: 
+# Name: draw tan function
 
 ## Examples:
 Insert examples here.
diff --git a/angle.md b/angle.md
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--- /dev/null
+++ b/angle.md
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+# Name: angle
+
+## Examples:
+println(atan(50));
+
+## Description:
+gives back angle between bottom of screen and line in radians
+
+## Syntax:
+atan(value)
+
+
+##Parameters: 
+angle - float: angle in radians
+x & y coordinates - float: position of line
+
+##Returns:
+float
+
+##Other notes:
+make sure while inputting value from y to subtract from the height because of the way the coordinate system works
diff --git a/gives_back_angle/gives_back_angle.pde b/gives_back_angle/gives_back_angle.pde
new file mode 100644
index 0000000..c893bf9
--- /dev/null
+++ b/gives_back_angle/gives_back_angle.pde
@@ -0,0 +1,19 @@
+//declare variables
+
+
+void setup () {
+  size(800, 600); //canvas size
+}
+
+void draw() {
+  background(255); //draw bg
+  println(angle(100,500));
+}
+
+
+
+float angle (float x, float y) {
+  line(0, 600, x, y); //draw line
+  float a = atan(sqrt(sq(mouseY) + sq(mouseX)));
+  return a; //angle in radians
+}
diff --git a/impulse and momentum.md b/impulse and momentum.md
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index 0000000..8e72e85
--- /dev/null
+++ b/impulse and momentum.md	
@@ -0,0 +1,23 @@
+# Name: momentum
+
+## Examples:
+println(momentum); 
+
+## Description:
+gives momentum when values are put in
+
+## Syntax:
+p = sqrt(sq(px(value)) + sq(py(value))
+
+##Parameters: 
+mass - float: mass of objects in kg
+velx0, velxf, vely0, velyf - float: velocity of object in x and y direction, final and initial
+px - float: x momentum
+py - float: y momentum
+p - float: total momentum
+
+##Returns:
+float
+
+##Other notes:
+Anything else?
diff --git a/impulse_and_momentum/impulse_and_momentum.pde b/impulse_and_momentum/impulse_and_momentum.pde
new file mode 100644
index 0000000..94fdddd
--- /dev/null
+++ b/impulse_and_momentum/impulse_and_momentum.pde
@@ -0,0 +1,16 @@
+void setup() {
+  size(800, 600); // canvas size
+  //initialize variables
+}
+
+void draw() {
+  background(193, 220, 230); //draw bg
+  println(m(23, 5, 8, 3, 74));
+}
+
+float m (float mass, float velx0, float velxf, float vely0, float velyf) {
+  float px = mass*velxf - mass*velx0; //x momentum
+  float py = mass*velyf - mass*vely0; //y momentum
+  float p = sqrt(sq(px) + sq(py)); //total momentum
+  return p; //returns momentum (kg*m/s)
+}
diff --git a/triangle.md b/triangle.md
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index 0000000..7dd5308
--- /dev/null
+++ b/triangle.md
@@ -0,0 +1,33 @@
+# Name: 
+drawtriangle
+## Examples:
+void setup(){
+  size(800,600); 
+  }
+void draw(){
+
+  drawtriangle(345, 234, 578, 234, 563, 455, 43, 56, 21);
+}
+
+## Description:
+draws a triangle at a user-specified location along with a user-specified color
+
+## Syntax:
+triangle(x1,y1,x2,y2,x3,y3); 
+
+##Parameters: 
+x1: float - 1st x coordinate of triangle
+y1: float - 1st y coordinate of triangle
+x2: float - 2nd x coordinate of triangle
+y2: float - 2nd y coordinate of triangle
+x3: float - 3rd x coordinate of triangle
+y3: float - 3rd y coordinate of triangle
+r: float - red value of color
+g: float - green value of color
+b: float - blue value of color
+
+##Returns:
+void
+
+##Other notes:
+
diff --git a/triangle/triangle.pde b/triangle/triangle.pde
new file mode 100644
index 0000000..6cf6877
--- /dev/null
+++ b/triangle/triangle.pde
@@ -0,0 +1,17 @@
+
+
+
+void setup () {
+  size(800, 600); //canvas size
+}
+
+void draw () {
+  background(255) ;  //draw bg
+  drawtriangle(234, 23, 123, 573, 742, 46, 234, 56, 56); //draws triangle w/ assigned vaues for stuff
+}
+
+void drawtriangle(float a, float h, float c, float d, float e, float f, float r, float g, float b) { //create function for traingle
+
+  triangle(a, h, c, d, e, f); //draws traingle at assinged locations
+  fill(r, g, b); //color of triangle
+}
\ No newline at end of file