Questions for flat earthers (stationary earth, gleason map)

Questions for flat earthers who believe in a stationary earth (gleason map).

1: How do mountians cast shadows on clouds? https://goo.gl/images/NB2PFm

2: Where is Polaris? https://goo.gl/images/giv4qK

3: How are antarctica flights possible? http://www.antarcticaflights.com.au/