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