Worksheet 1
(Ch 9: Lines and Angles)
DATE: _________________________
NAME: _________________________
CLASS: _______________________
1. State true or false.
a) �����⃗
𝐴𝐴𝐴𝐴 and �����⃗
𝐵𝐵𝐵𝐵 are the same rays.
b) Two acute angles can form a linear pair.
c) Two obtuse angles cannot form a linear pair.
d) Adjacent angles do not have any common interior point.
e) Two vertically opposite angles have one common arm.
2. Find the complement of each of the angles.
a) 30°
b) 43°
c) 81°
d) 15°
e) 89°
f) 0°
d) 40°
e) 0°
f) 90°
3. Find the supplement of each of the angles.
a) 110°
b) 80°
c) 150°
4. Identify the pairs of complementary and supplementary angles among the
following.
a) 68°, 22°
b) 121°, 59° c) 4°, 176°
d) 79°, 11° e) 24°, 66°
f) 91°, 89°
5. Name the complementary and supplementary pairs of angles in the given
figure.
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6. Look at the given figure.
a) Is ∠1 adjacent to ∠3?
b) Is ∠AOC adjacent to ∠AOD?
c) Do ∠AOE and ∠EOB form a linear pair?
d) Are ∠BOD and ∠DOE supplementary to each other?
e) Is ∠5 vertically opposite to ∠3?
f) Which angle is vertically opposite to ∠4?
7. Find the value of unknown variables.
a)
b)
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