cylinder defenly * * * * * Whatever defenly means, the answer is definitely not a cylinder which has no vertex - not more than one! A rhomboid is one possible answer.
A cuboid.
octahedron * * * * * OCTAHEDRON has 8 letters??? I make it 10. How about TRIANGLE?
There are a great many of them. One nice one is the icosahedron, which has 20 vertices and 11 letters.
polyhedra
A polygon.
Im here to answer your question- possibly a cone. * * * * * and give you the wrong answer. A cone is a shape with 1 vertex: not MORE THAN 1 vertex! All polyhedra have more than 1 vertices.
Almost any 2D/3D shape has more than one vertex. Triangles, squares, rectangles etc. etc.
A vertex is the point at which two edges meet such as a corner. Shapes that have more than one vertex includes polygons. Triangles, rectangles, and octagons have more than one vertex.
They are the points where three (or more) planes (or faces of the shape) meet.
triangle * * * * * A triangle is NOT a 3d shape! A cube.
Any polyhedron.