Question

Which of the following are simple closed figures?
Figure

Answer 1

(a) It is a simple closed figure because it does not intersect itself
(b) It is a simple closed figure because it does not intersect itself.
(c) It is not a simple closed figure because it intersects itself.
(d) It is a simple closed figure because it does not intersect itself.
(e) It is not a simple closed figure because it intersects itself.
(f) It is a simple closed figure because it does not intersect itself.