Based on the video, which venus phase would be impossible to see (from earth) of venus orbited earth as described in ptolemy's earth-centered model

Ptolemy's model theorizes that Earth is the center of the universe, and that all planets and the Sun revolve around it. If Venus is between the Earth and the Sun, then the Venus must always be crescent or all dark. Thus, it is impossible to see a full or gibbous face of Venus. Later on, this was disproved by Galileo when he saw through the telescope all phases of Venus. Hence, the heliocentric theory was approved instead.