Observe the figure and state the number of angles and their names.

Draw two open figures and two closed figures. Identify the boundary of the figures as curvilinear or linear boundary.

A horse is tied with the help of a rope to a peg. If the horse is made to move keeping the rope tight, what geometrical path will the horse trace?

The angles of a quadrilateral are in the ratio of $2:3:4:6.$ Find the measure of each angle.

The two angles of a quadrilateral are $70°$ and $120°.$ The other two angles are equal. Find the measure of equal angles.