7. Which angles are linear pair?
A. ∠ABD and ∠CBD
B. ∠ABD and ∠EBD
C. ∠1 and ∠3
D. ∠2 and ∠4
8. If ∠ABC is a straight angle, which angle is congruent to ∠CBE?
A. ∠2 B. ∠3 C. ∠ABE D. ∠DBC
9. When two lines are perpendicular, what kind of angles do they create?
A. 0° angles C. 180° angles
B. 90° angles D. 360° angles
For numbers 10 – 11, please refer to illustration 5.
10.Lines b and c are parallel lines. Which of the following statement is true about
A. Parallel lines do not meet. b
B. Parallel lines are intersecting lines.
C. Parallel lines have a point of intersection. c
D. All of the above Illustration 5
11.How do you describe the lines?
A. Line b is parallel to line c.
B. Line b is intersecting line c.
C. Line c is intersecting line b.
D. Line c is perpendicular to line b.
For numbers 12 and 13, please
refer to illustration 6.
12.What is the measurement of the angle adjacent to ∠1?
7.a 8.d 9.b 10.b 11.c 12.d