Angle Pair Relationships

1. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014
Bellwork
1. (5/12) * (6/25) = ? 1/2*1/5=1/10
2. Classify m Z if Z = 89. acute
3. Name the angle:
4. m ADC = ?
5. What is an angle bisector?
P
B J
a ray that divides an angle into 2
congruent angles
PBJ (ok so I was hungry)
A
B
D
C
4421
65

2. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014
1.5 Angle Pair Relationships
Complementary Angles: Sum of their measures is 90 degrees.
90
°
32
°
45
°
45
°
They give
each other
compliments
U + Me
= 90
You're
a cutie
Supplementary Angles: Sum of their measures is 180 degrees.
50
°
180
°
80
°
100
°
They supplement
(complete) each other
Adjacent Angles: angles that share a common vertex and side
Are they in LOVE??
1 2
Inseparable

3. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014

4. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014

5. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014

6. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014
Linear Pair: adjacent angles where their non-common sides are
opposite rays.
1
2
Vertical Angles: 2 angles form 2 pairs of opposite rays
3
4
5
6
3 & 5 are vertical angles
4 & 6 are vertical angles
Line up so perfectly
loVe or cupid?
3 shoots a V at 5
4 shoots a V at 6

7. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014

8. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014

9. 1.5 Angle Pair Relationships
HW pg. 38 #4­9, 14­21, 31 & 32
August 22, 2014
HW
pg. 38
#4-9, 14-21, 31 & 32