conical projection with two standard parallel

above video explains you the concept of conical projection with two standard parallel. You can also watch - CONICAL PROJECTION 1) one standard parallel conical projection - https://youtu.be/C0XHMJL5lEc ZENITHAL PROJECTION 1) polar zenithal equidistant projection - https://youtu.be/WLtgKmd4820 2)polar zenithal equal area projection - https://youtu.be/lYgHDm6gLu8