Download September 04, 2015

September 04, 2015
September 04, 2015
September 04, 2015
September 04, 2015
September 04, 2015
1.4 Angle Measure
Objective: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
ray:
opposite rays:
September 04, 2015
Obj: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
angle:
A
1
B
C
measured in:
1o = 60'
1' = 60"
Two angles are complementary if their sum is 90o. Find the complement of an
angle with measure 14o 35' .
Two angles are supplementary if their sum is 180o. Find the supplement of an
angle with measure 112o 15' 23".
September 04, 2015
Obj: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
How many degrees are in the angle formed by the hands of a clock
at 2:20pm?
September 04, 2015
Obj: * Measure and classify angles
Angle Types:
* Identify and use congruent angles and the bisector of
an angle
acute:
right:
obtuse:
straight:
September 04, 2015
Obj: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
Congruent Angles:
If angles are = , then they have the same meas.
B
A
Angle Bisector:
If an
is bis. then it is divided into 2 =
A
D
B
C
s.
September 04, 2015
Obj: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
September 04, 2015
Examples:
Obj: * Measure and classify angles
A
* Identify and use congruent angles and the bisector of
an angle
G
B
5 7
6
D
E
4
3
F
1. Name all the angles that have B as a vertex.
2. Name the sides of
5.
3. Write another name for
6.
September 04, 2015
Obj: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
4. KJ and KM are opposite rays, and KN bisects
m
JKN = 8x -13 and m
NKL = 6x + 11, find m
N
L
M
K
J
JKL. If
JKN.
September 04, 2015
Obj: * Measure and classify angles
* Identify and use congruent angles and the bisector of
an angle
HW
HR: (1.4) Pg. 41: 13-27odd, 36,37,41,44,51,52