Basic Two-Dimensional Shapes
At the two-dimensional level-the level of silhouettes-there are three basic shapes: the square, the circle, and the triangle. Simplified silhouettes of objects are created by combining variations of these three basic shapes.
All silhouettes can be constructed by combining parts of the three basic shapes: the square, circle and equilateral triangle. Variations of these basic shapes include ovals, rectangles, and triangles with sides of different lengths.
Even complex shapes like these are made by combining variations of the triangle, square, and circle.