Which of the following two-dimensional shapes can be rotated to create a cylinder? O Triangle O Square O Circle O Ellipse

If you take a circle and rotate it around a straight line (the central axis), voilà! You get a perfect, smooth cylinder. This is why circles are the heroes of cylinder creation! Also, if you take an ellipse and give it a spin around its major or minor axis, you'll create an elongated or flat cylinder. How cool is that? While triangles and squares can't produce cylinders in their typical forms, a triangular prism does exist! It’s shaped more like a tent than a cylinder, but if you really wanted to get creative with your triangle and add some bolstering, you could create a fun variation. Just remember, stick to circles or ellipses for that smooth cylindrical finish!