Please help I will mark branliest The measure of an interior angle of a regular polygon is 172.5 degrees.

How many sides does this polygon have?

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4