Software used to represent day and night at a given time

__________ is a planetarium program

_________is a guide to the periodic table and a database of information about chemistry and the elements

___________are the lines connecting two non-adjacent verticles of a polygon.

_________, a cool little game where kids build molecules out of atoms 

______ is an application software to draw the geometrical shapes.

__________is a software application that delineates the countries experiencing day or night at a given time on a world map using light and shade.

____________tool used to control the lengths of lines,the angle sizes etc.