A cuboid douses have 8 verticess and 12 edges.
Square pyramid: 5 Cube: 6
There are infinitely many such rectangles.
That depends on how big the rectangles are.
4 rectangles
Rectangles and squares both have 4 corners.
96 rectangles.
There are 15 rectangles.
2 triangles and 3 rectangles(:
There are 2025 rectangles in a 9x9 grid.
There are two pentagons and five rectangles.
The hexagonal prism has six sides that are rectangles.