The result for a sum of all interior angles for #N#-sided convex polygon is #N*180^o - 360^o = (N-2)*180^o# In #N#-sided regular polygon all #N# angles are equal, so each is equal to #((N-2)/N)*180^o# For #N=9# this gives a measure of one interior angle of a regular 9-sided polygon: #((9-2)/9)*180^o = 140^o#
The intrinsic, or gross, value of an option is the amount the option is in the money. For example, if you have the option to pay $10 per share for a stock that trades for $15, the option has an intrinsic value of $5 per share.
This trigger price is referred to as the exercise or strike price, and it determines the price of the option. Exercise Price Example. If an investor owns call options for a stock trading at $50 with an exercise price of $45, it means the call options are trading in the money by $5. The exercise price is lower than the price at which the stock is currently trading. The call options give the investor the right to buy the stock at $45 even though it's trading at $50, allowing the investor to make a $5 profit by exercising the option.