1. If two lines are coplanar, CAN they intersect?

2. If two lines are coplanar, do they have to they intersect?


#3-#7 True or False
3. A pair of opposite rays form a line.

4. A pair of opposite rays form a segment.

5. A pair of opposite rays have the same endpoint.

6. Two planes intersect at a point.

7. Two lines intersect at exactly 3 points.


8. How many points do you need to define (name) a line?

9. How many points do you need to define (name) a plane?


A BISECTOR cuts something in half. Usually a segment or angle.
10. If a 70 degree angle is bisected, the resulting smaller angles will each measure degrees.

11. A segment that is 18 inches long is bisected, how long are the two, new, smaller segments?

12. An angle was bisected, the new angles are each 34 degrees. How big was the original angle?


13. A, B, and X are collinear points. B is between A and X. if AB =10, and AX=30, how long is BX? (hint: draw a picture)




For #14-16, us this diagram to answer:
pic numberline.jpg
14. What is the length of QS?

15. What is the length of RT?

16. What is the MIDPOINT (point in the middle) of QT?



For #17-18use this diagram to answer:
pic angle.jpg
ray LN bisects angle MLP, *
17. If the measure of angle MLN is 30 degrees, what is the measure of angle MLP?

18. If the measure of angle PLM is 80 degrees, what is the measure of angle NLP?


For #19-21 use this diagram to answer:
pic angle 2.jpg

19. Name one pair of vertical angles

20. Name a pair of STRAIGHT ANGLES.

21. Which two angles are adjacent to angle 4?