An altitude of a triangle is a line segment that starts at one vertex and is perpendicular to the side across from it. [br][br]Our goal today is to find out what special relationships this altitude creates between different parts of the triangle.[br][br]Use the template below to find out by:[br][br]1) Checking the "Show Triangles" Box.[br][br]2) Checking the "Reflect Triangles" Box (this will flip the little pieces out of the big triangle)[br][br]3) Dragging the slider for "e" to the right (slowly)[br][br]4) If you are stuck along the way, use the "Hint" Button to help you out!

In your notebook, answer the following questions:[br][br]1) What is special about these triangles?[br][br]2) How do you know?[br][br]*Use your results to answer the question on the board!