Sin 30 sin 60 product

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Similarly fie each expression 18,19,20