The development of lateral surface of a pyramid consists of a number of equal ________triangle in contact.

Which method of development is employed in case of prisms?

The line of intersection formed is curve while two solids intersect the solids may be ________

The development of the curved surface of a cone is a ______ of a ______

The line of intersection formed is straight line while two solids intersect the solids may be _______

The surfaces of which intersect one another in lines which are called line of intersection.

The line of intersection formed is straight line while two solids are intersecting the solids may be ____

Which method of development is employed in case of double curved objects?