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GeoGebraGeoGebra Classroom

Extending the Area of a Triangle

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?