How do you master geometry?

Answer 1

drawing figures with shapes and measurements involved can help

or drawing funny math Cartoons can help you if you're creative (helps me a lot)

or make up a song

or do a craft project like oragami to determine like the angle of rotation or whatevs

or do a wood shop/carpentry project

or try to enginner something

or look through a telescope

or try Astrology (read a natal chart)

or get people to play a geometry game with you