# Extending the Area of a Triangle

- Author:
- visualgeom

- Topic:
- Area

Please complete the activity at https://www.box.com/s/0349eb83a5cc9db96fb5.
Once the attached activity is completed, you will use the applet to determine a formula that allows you to find the area of the triangles from this activity.
1)

**Move point K only.**How does this movement impact the area of the triangle? Return point K to 0. 2) Now**move only point J**. How does this movement impact the area of the triangle? Return point J back to 0. 3) Now**move points J and K**. ** How does the area change if both movements are positive? ** How does the area change if both movements are negative? ** How does the area change if you have one positive & one negative movement? 4) Try to establish a rule that will allow you to determine the change in area of a triangle when given the 2 movements?