up vote 1 down vote. 2D cross products are more properly called 2d wedge products. Wedge products generalize to other dimensions, but cross products are always 3d wedge products. The usual operator symbol for a wedge product is ^ . You can use 2d wedge products to determine if one vector is to the left or the right of another one. If vector A is to the right of vector B, then, if A is to the left. If they are parallel or either of them is 0, then A ^ B = 0. In vector graphics, 2d wedge products can be used to analyze the intersection of 2 parametrized curves, e.g. for removing portions of one curve that lies to the right of another.
Definition of morning star for Students. : a bright planet (as Venus) seen in the eastern sky before or at sunrise.
Cygnus, the Swan. The brightest stars of Cygnus form a cross, so the swan is also known as the Northern Cross. Find it soaring high overhead during late summer evenings. The constellation's brightest star is Deneb â an Arabic word that means the tail.. Deneb represents the tail of the swan but the top of the cross.The swan's outstretched wings form the horizontal bar of the cross, while the head of the swan, a double star called Albireo, is at the bottom of the cross.he constellation's brightest star is Deneb â an Arabic word that means the tail.. Deneb represents the tail of the swan but the top of the cross. The swan's outstretched wings form the horizontal bar of the cross, while the head of the swan, a double star called Albireo, is at the bottom of the cross.