The expression given is

The sum of the expression will be,

The sum will be
The answer is 0.51111111111111111 (It goes on for infinity).
Answer:
5) Regular decagon. 6) Yes.
Step-by-step explanation:
Number 6 is yes bc the interior angles of a triangle have to equal 180, and 1+2+177 equals 180.
the statement c will always be true in the end