How to draw a camera shutter shape using basic geometry tools

#gostudy_button_67021ae1ca9a7 { color: rgba(255,255,255,1); }#gostudy_button_67021ae1ca9a7:hover { color: rgba(30,40,69,1); }#gostudy_button_67021ae1ca9a7 { border-color: rgba(30,40,69,1); background-color: rgba(30,40,69,1); }#gostudy_button_67021ae1ca9a7:hover { border-color: rgba(30,40,69,1); background-color: rgba(255,255,255,1); }