morning game

let's play a game. here's the instruction.

create a shape using only 6 lines to form as much corner as you can inside the shape.
of course the easiest would be a hexagon with 6 corners inside the shape.
the pic below is a rectangle but it has 12 corners inside it.

it all started from this shape. a crossed box. i drew this on a foggy window on the bus going to the hosp early in the morning just to spend time. so then i asked can i get more corners?

so far the most i can get is 36 corners i was thinking that there is a shape with more corners but i cant draw it out because the condensation was disappearing and I'd arrived to the hospital.

another thing is that i was wondering if there's a way to do this by doing calculation not just by try and error. guess it would be the functions related stuffs as that's what you use when you are looking for the highest/lowest or increasing/decreasing value for the equation (forgot the proper name). anyway. yeah i got 36 by try and error.

the hints to get the most here is to be able to get as many intersection of the lines inside the shape formed.

pfffttt i should be memorizing notes and drugs instead of making and playing this kind off game but oh well