Geometry
Worksheet 1-2
Name:
For #1-8, use the figures to name each of the following. Use correct notation.
1. three collinear points
2. four coplanar points
3. a plane containing E
4. the line containing points A and B
use for #1-5
5. a pair of lines that intersect at A
6. six segments
7. six distinct rays
8. a pair of opposite rays with endpoint T
use for #6-8
For #9-12, use the figure to name the intersection of each pair of planes.
9. plane QRS and plane RSW
10. plane UXV and plane WVS
11. plane XWV and plane UVR
12. plane TXW and plane TQU
use for #9-14
13. Name two planes that intersect in QU .
14. Name two planes that intersect in TS .
For #15-16, use the figure to name each of the following.
15. two points and a line that lie in plane T
16. two planes that contain line l
use for #15-16
(over)
For #17-28, write whether each statement is always, sometimes or never true.
17. If two planes intersect, then they intersect in a straight line.
18. If two lines intersect, they intersect at two different points.
20. AB and BA are the same line.
21. Three collinear points are coplanar.
22. Three coplanar points are collinear.
23. Any three points are coplanar.
24. If two rays share a common endpoint, then they form a line.
25. CD and DC are the same ray.
26. Intersecting lines are coplanar.
27. Four points are coplanar.
28. A plane containing two points of a line contains the entire line.
Explain…
29. Suppose two points are in plane P. Explain why the line containing the points is also in
plane P.