Draw rough diagram to illustrate the following:

(i) Open curve

(ii) Closed curve

Classify the following curves as open or closed:

Draw a polygon and shade its interior. Also draw its diagonals, if any.

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

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

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

(iii) A polygon with two sides.

Following are some figures: Classify each of these figures on the basis of the following:

(i) Simple curve (ii) Simple closed curve

(iii) Polygon (iv) Convex polygon

(v) Concave polygon (vi) Not a curve