Answer:
20 sides
We know that if we find the size of an exterior angle for the given regular polygon whose exterior angle is 18∘, we can find the number of sides. Where, n is the number of sides. Therefore, there are 20 sides in the given regular polygon whose exterior angle is 168∘.
There are 2,500,000 pennies in $25,000
Line tu is parallel to rs
Answer:
r=d÷2 is the right answer