Name the angles in the given

Consider the given figure and answer the questions:

(a) Is it a curve?

(b) Is it closed?

Illustrate, if possible, each one of the following with a rough diagram:

(a) A closed curve that is not a polygon.

(b) An open curve made up entirely of line segments.

(c) A polygon with two sides.

In the given diagram, name the point(s)

(a) In the interior of ∠DOE

(b) In the exterior of ∠EOF.

Draw rough diagram of two angles such that they have

(a) One point in common

(b) Two points in common

(c) Three points in common

(d) Four points in common

(e) One ray in common.