Name __________________________________
Date ___________________
Think of each segment in the diagram as part of a line. Which line(s) or plane(s) appear
to fit the description?
1. Line(s) parallel to AB
2. Line(s) perpendicular to BF
3. Line(s) skew to CD and containing point E
4. Plane(s) perpendicular to plane ABE
5. Plane(s) parallel to plane ABC
Complete the statement with sometimes, always, or never.
6. If two lines are not parallel, then they ____________________ intersect.
7. If one line is skew to another, then they ___________________ intersect.
8. If two lines are perpendicular, then they ___________________ intersect.
9. If two lines are coplanar, then they are ____________________ perpendicular.
Classify the angle pair as corresponding, alternate interior, alternate exterior, or
consecutive interior angles.
10. l and 5
11. 4 and 6
12. 16 and 10
Find m  1 and m  2.
13.
14.
Find the values of x and y and name the angle relationship.
15.
16.
17.
18. GIVEN: q || r
PROVE:  1   3
Statements
Reasons
1. q || r
1. ____________________________
2.  1   2
2. ____________________________
3.  2   3
3. ____________________________
4.  1   3
4. ____________________________
REVIEW
19. Write the definition of parallel lines in biconditional form:
Use the Law of Detachment to make a valid conclusion.
20. If the measure of an angle is less than 90°, then the angle is acute.
The measure of  A is 46°.
21. If a food has less than 140 milligrams of sodium per serving, then it is low sodium. A serving of
soup has 90 milligrams of sodium per serving.