Sum of interior and exterior angle is 180 so
Interior angle =180−72=108
Now we need to find the no of sides of the polygon= n We know that interior angle of n-sides is given by
(n−2)×180n
We have
(n−2)×180=108n
or
180n−360=108n
or
72n=360
n=5 sides so there are 5 angles each of 108 degrees Sum of the interior angles=108+108+108+108+108=540.....
<span>To find the measure of each exterior angle of a regular polygon, you just divide 360 degrees by the number of sides.
</span>
Answer:
B
Step-by-step explanation:
Here, we want to find which of the expressions is undefined
kindly note that
sin^-1 is arcsin
cos^-1 is arccos
A. arcsin (1) = 90 degrees
B. arcsin (-2) = undefined
c. arccos 0 = 90 degrees
d. arccos (-1) = 180
Answer:
C. 4 times y divided by 9
Answer:25.50
Step-by-step explanation:
Because .50 is in the hundreths, and it rounds up to that because it is above 5.
Answer:
x = 3
Step-by-step explanation:
Angle D is congruent to angle B.
Angles E and B are supplementary.
180 - 101 = angle B
B = 79
Solve for x.
79 = 27x - 2
81 = 27x
x = 3