8. More Angles
• Corresponding Angles- on
the same side of the
transversal and in the
same position on different
lines. Corresponding
angles are always equal
9. a
b
c
m n
p o
q r
t s
Looking at Corresponding
Angles
< m = < q
< p = < t
< n = < r
< o = < s
10. More Angles
• Complementary angles
(complements)– 2
angles are
complementary if the
sum of their measures
is 90º
12. More Angles
• Supplementary angles
(supplements)- 2 angles
are supplementary if the
sum of their angles is
180º
13. 110º ?
What is the
supplement of a
110º
110º + ___ = 180º
70º
14. D
C
A
B
E
If < DAB is a right angle and
m < DAC is 42°, find m < BAC
90° - 42° = 48°
15. D
C
A
B
E
< DAC and < BAC are which
of the following
a)Corresponding c) Complementary
b)Vertical d) Supplementary
C) Complementary
they add up to be
90°
16. D
C
A B
F
If < ADF is a straight angle and
< ADB is a 112° find m < BDF
180° - 112° = 68°
17. D
C
A B
F
< ADC and < BDF are which
of the following
a)Corresponding c) Complementary
b)Vertical d) Supplementary
b) Vertical
18. D
C
A B
F
< ADC and < CDF are which
of the following
a)Corresponding c) Complementary
b)Vertical d) Supplementary
d) Supplementary they add up to be
180°
19. (4x)
If the value of x is
chosen at
random from {8,
10, 12, 18, 30}
what is the
probability that
<R is an acute
angle?
R
1) Fill in x
with each
number and
multiply to
see what you
end up with
2) Find out
what your
probability is
for it being
an acute
angle
(4x)
4 x 8= 32°
(4x)
4 x 10= 40°
(4x)
4 x 12= 48°
(4x)
4 x 18= 72°
(4x)
4 x 30= 120°
20. (4x -12)
If the value of x is
chosen at
random from {8,
10, 15, 22, 34}
what is the
probability that
<T is an obtuse
angle?
T
1) Fill in x
with each
number and
multiply to
see what you
end up with
2) Find out
what your
probability is
for it being
an acute
angle
(4x-12)
4(8) -12= 20°
(4x)
4(10) - 12= 28°
(4x-12)
4(15) - 12= 48°
(4x - 12)
4(22) - 12= 76°
(4x-12)
4(34) - 12= 124°
1 out of 5
