Answer:
The value of an exterior angle is the sum of the two interior angles not adjacent to it so
a:
x = 64 + 45 = 
b:
3x + 6 = 153 so
3x = 147 so
x = 

Exact Form:
-1/3
Decimal Form:
-0.3 (with a line over the 3)
Answer:
Circunferencie can be writen also as a fuction of the diameter of the circle
C = pi*D
Where
D = circunferene diameter
Step-by-step explanation:
C = 2.pi.R = 2.R.pi
In a circle 2.R = D
So,
C = pi.D
Answer:
i think it is 1/26
Step-by-step explanation:
R = 8 since 8 times 10 = 80