Math 102 Handout # 3 Spring 2007
Dr. Howald 3-Angles.doc
1. Which of the following angles is bigger? How would you explain the answer to a
student in third grade? Measure each with your protractor to the nearest degree.
2. Consider a clock (correctly set) that starts ticking at noon.
a. What is the measure of the total angle swept by the hour hand when it reaches 3:00
P.M.?
b. What is the angle between the hour hand and minute hand at exactly 4:00 A.M.?
c. At what hour(s) will the angle between the hour and minute hands be exactly 30?
3. In the figure to the right, assume the lines DH and AF are perpendicular. Find angles,
written in the form AFG, which have the following properties:
a. complementary angles.
b. supplementary angles.
c. vertical angles.
d. adjacent angles that are not complementary
or supplementary.
e. an acute angle.
f. an obtuse angle.
g. a right angle.
4. Using a clean sheet of paper (with no holes or rips) follow these steps.
Fold one corner of the sheet (at an angle) on to the paper and crease it so the line
created will show when the paper is unfolded. (Do not unfold it.)
E
A
F
G
B
H
C
D
