B 1.4 (Day 2) angle addition relationships.notebook
February 25, 2014
Bell Work: On your homework
T
Q
P
R
1. Name the red angle 2. Name the vertex and sides of the angle
3. Classify the angle: acute, obtuse, right or straight?
1
B 1.4 (Day 2) angle addition relationships.notebook
February 25, 2014
Angle Relationships
R
Angle Addition Postulate: If P is in the interior of RST, then P
1
S
2
T
Ex. 1
Find m CDF given the following information E
F
C
62
o
o
18
D
Ex. 2
o
o
Find m WDC if m EDC = 145 and m EDW = 61
E
W
D
C
Ex. 3 o
o
o
m ABC = 145, m ABG = (10x) and m CBG = (2x + 13) G
A
C
Find x
Find the measure of each angle
B
2
B 1.4 (Day 2) angle addition relationships.notebook
February 25, 2014
Angle Bisector: A ray that divides an angle into ________________________
If XY bisects WXZ then ______________________ Z
Y
X
W
Ex. 4 BD bisects ABC, find the two angle measures not given A
A
(7x + 3)
64
D
B
B
D
(6x + 11) C
C
Find x: m<ABD
m<CBD
m<ABC
x
3