Final answer:
Shapes used in subclass RA refer to the different types of shapes that can be found in art. Geometric shapes are regular, man-made shapes, while organic shapes are irregular, freeform shapes found in nature. Artists in subclass RA may use both geometric and organic shapes in their artwork.
Step-by-step explanation:
Shapes used in subclass RA refer to the different types of shapes that can be found in art. There are two main types of shapes: geometric and organic. Geometric shapes are regular, man-made shapes like squares, triangles, and circles, while organic shapes are irregular, freeform shapes found in nature, such as leaves, clouds, and animals. In subclass RA, artists may use both geometric and organic shapes to create their artwork.