Download Fill in the outline with a definition (next to words underlined), a

1.4 Angles Outline
Geometry
Name _____________________
Date _________________
Angle
Fill in the outline with a definition (next to words underlined), a diagram, or answer the
questions.
Refer to section 1-4, starting on page 24 in your book.
1. How is the Protractor Postulate like the Ruler Postulate?
Angle Classifications (write the definitions)
2. Acute angle:
3. Right angle:
Question: how do we know this is a right angle?
K
4. Obtuse angle:
5. Straight Angles
6. Read the Angle Addition Postulate. Fill in the blank based on diagram:
a. 𝑚∠𝑃𝑄𝑆 + 𝑚∠𝑆𝑄𝑅 = ______________________
b. So if the measure of ∠𝑃𝑄𝑆 𝑖𝑠 50o and m∠𝑆𝑄𝑅 is 25o, what is 𝑚∠𝑅𝑄𝑃?
7.
Find m
RQT if m
PQR = 170, m
SQT = 30, and m
2 = 90.
2
8. If m
MYZ = 160, what is m
MYW?
Congruent Angles:
9. For the two congruent angles below, write a congruence statement and an equality
statement. Look at bottom of page 26 for reference.
10. How are the angles marked as congruent?
E
B
G
F
C
A
3
Use this picture for the next questions.
L
M
35o
35o
J
P
K
11. Angle Bisector
12. Consider
LKP and KM
. Is
KM a bisector? Why or why not?
4