4.2 Bisectors of adjacent supplementary angles

CF and CE are angle bisectors
Question 1
What are 3 things you notice about the diagram above?
Question 2
Diego made a conjecture, "The angle formed between the angle bisectors is always[br]a right angle, no matter what [math]\angle ECB[/math] is"[br][br]Is Diego correct? Explain your reasoning
Challenge
Can you create a conditional about this situation?
Close

Information: 4.2 Bisectors of adjacent supplementary angles