Experiment with different types of polygons, such as a triangle, rectangle, parallelogram, pentagon, hexagon, and so on, and revolve them around an axis of rotation. Try to create interesting or unusual solids of revolution. Describe at least two unusual shapes that you can make by revolving a polygon.

Polygon1Axis of Rotation2Solid of Revolution

irregular pentagon :

1axis of symmetry2diamond-shaped solid

right triangle:

1hypotenuse2two cones with a common circular base

Step-by-step explanation:

PLATO hope this helps

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.