What am I?

A popular afterlife location to send evil people. What am I?

I am worthless, yet when added to others I add worth. I confounded the ancient Greeks, yet I changed men’s understanding. What am I?

I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors. What am I?

I pass before the sun, yet make no shadow. What am I?

Riddles and Answers