Basic shapes do not have to be the perfect or equilateral triangle, a perfect square or a
perfect circle. These shapes have variations like the triangle being isosceles or scalene,
the square becoming a rectangle, diamond, trapezoid or parallelogram or the circle
becoming an oval.
To look at three dimensional, these basic shapes can become cones or boxes.
You can also use basic shapes for eyes and faces, especially with cartoons. Look at the
drawings below.