Answer:

Explanation:
Given:

Required
Determine the value of n
For a decagon:


First, we need to determine the angle of each rotation.
This is calculated by dividing the complete rotation with number of sides

Next, we calculate the possible value of n.
Since there is no option, the general rule is that the possible value of n must be a multiple of angle of each rotation i.e. 36
Hence, n could be either of the following:
