Q.1.
Which of these shapes is not a polyhedron?
Q.2.
The polygons forming the surface of a polyhedron are called .......
Q.3.
Where the straight sides of two polygons meet on the surface of a polyhedron they form a(n) .......
Q.4.
The place on the surface of a polygon where several edges meet is called a .......
Q.5.
What is the name of the regular polyhedron in which four equilateral triangles meet at each vertex?
Q.6.
If you add the number of faces of a polyhedron to the number of its vertices the result is always .......
Q.7.
How many edges has a pyramid with a hexagonal base?
Q.8.
How many faces has the regular polyhedron made with pentagons?
Q.9.
A polyhedron with four rectangles or squares meeting at each vertex is called .......
Q.10.
A polyhedron formed from rectangles set at right-angles to a polygonal base and top is called a .......