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NAGAM VENKATA KRISHNA 8NAGAM VENKATA KRISHNA 8 

How to check latitude and longitude are in given polygon(area) using visual force page

SwethaSwetha (Salesforce Developers) 
HI Nagam,

Check code posted on https://stackoverflow.com/questions/39028863/checking-if-a-point-is-inside-of-a-polygon to get started.

If this information helps, please mark the answer as best. Thank you