Visualising Sol...

A polyhedron is said to be ______ if its surface does not intersect itself.

Is sphere, a 2D or a 3D object?

A ________ is a three dimensional figure made up of sides called faces, each face being a polygon.

Which solid does not have any vertex?

_________ are the solids with identical regular polygons as their faces.

Polygons that are made up of regular polygons are called

Piya glued $$4$$ white cubes together as shown. Then she painted the entire object red.
How many faces of the $$4$$ cubes were painted red?

Polyhedrons that are made up of convex polygons are called

What do you call solid figures having only line segments as their edges?

In which polyhedron faces are congruent regular polygons and the same number of faces meet at each vertex?