Which represents the area of the shaded region? a Area of circle - area of the square - area of a triangle b Area of a triangle-Area of the square + Area of a circle c Area of a triangle + Area of the square + Area of the circle d Area of the circle - Area of the triangle + Area of the square

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