1. 1.4: Pairs of Angles

4. Adjacent angles have -- 1) common vertex 2) common side
3) no common interior points

5. When two lines cross, the nonadjacent angles are vertical.

6. A linear pair is two adjacent angles whose noncommon sides are opposite rays.

7. Without using a protractor, determine each lettered angle measure.

8. Without using a protractor, determine each lettered angle measure.

9. Without using a protractor, find m<ABC.

10. The m<2 = 85o. Find the m<4

11. The m<3 = 110o. Find the m<4

12. The m<1 = (4x + 134)o and the m<4 = (4x + 30) o
Solve for x.

13. The m<2 = (5x + 14)o and the m<4 = (2x + 26) o
Find the m<4.

14. Find x.

15. Find x.

16. Find x.

17. <A and <B are supplementary. Find m<A.
m<A = (4x + 12)o ; m<B = (2x + 6)o

18. Identify each angle pair as vertical angles, linear pair, just adjacent, or none of these.
<1 and <2
<3 and <4
<2 and <5
<1 and <4
<3 and <5