Triangle abc has been transformed into triangle a'b'c'. the algebraic formula for this transformation is  a) (x', y') = (2x, y)    b) (x', y') = (x, 2y)  c) (x', y') = (2x, 2y)  d) (x', y') = (2y, 2x)

Thomas is using a drawing program to complete a construction. which construction could he be completing? two perpendicular lines are drawn. inscribing an equilateral triangle in a circle inscribing a square in a circle inscribing a regular pentagon in a circle inscribing a regular hexagon in a circle