I tried to turn off the back culling display but it did not work even I have checked “remove back faces” under Culling in the Display Option window.

Does anyone know why?

in what way did it not work?

i don't think there really is a way to see if they are gone since your camera will always be showing front side faces.. but if you have a complex enough object, your performance should increase.

I mainly want to display the front face of the polygon model only in wireframe mode. But I could still see the back side of the polygon model even I turned on the “remove backfaces” in the display option window.

I should have simply turned on “hidden line invisible”.

Thank you for your attention