Converse of IST (II)

Interact with the applet below for a few minutes. Then answer the questions that follow. Be sure to change the locations of the white points and black point before re-sliding the slider.
Questions: 1) What is the measure of each red angle in the triangle above? How do you know this to be true? Explain. 2) Notice you knew information about the triangle's angles first. How would you classify this triangle by its angles? 3) After observing what you've observed, how would you classify this triangle by its sides? 4) Use your results from (2) - (3) to fill in the blanks to make a true statement: If a triangle is _______________________, then it is _______________________. 5) Explain how your statement for (4) above is an immediate consequence of what you observed in this previous worksheet.