[b][i]Observe: Use the slider to Rotate line CD.[/i][/b][br]1. Look for Vertical Angles, Linear Pairs and Adjacent Angles. [br]2. Look for a pair of Complementary Angles? What relationship exist between complementary angles?[br]3. Look for a pair of Supplementary Angles? What relationship exist between supplementary angles?[br]4. What is the sum of all of the angles around point O?[br][br][i][b]Questions:[/b] Move the slider toward the Left (But not all the way to the left...) [/i][br]5. Name one of each: an obtuse angle, acute angle, and right angle. [br]6. Are [math]< AOC and < DOB[/math] vertical angles? [br]7. Are [math]< DOA and < DOB[/math] adjacent angles? [br]8. Are [math]< DOA and < EOC[/math] complementary angles? [br]9. Are [math]< DOA and < DOB[/math] supplementary angles? [br]10. Find [math]m< DOA + m<AOE + m<EOC [/math]