Understanding E...

In figure, lines $$PQ$$ and $$ST$$ intersect at $$O$$. If $$\angle POR=90^o$$ and $$x:y =3:2$$, then $$z$$ is equal to 

In Fig. which of the following is a regular polygon? 

In a triangle, one angle is of $$90^{o}$$. Then
(i) The other two angles are of $$45^{o}$$ each
(ii) In remaining two angles, one angle is $$90^{o}$$ and other is $$45^{o}$$
(iii) Remaining two angles are complementary 

In figure, the value of $$x$$ is 

The closed curve which is also a polygon is 

In a solid if $$ F=V = 5$$, then the number of edges in this shape is

Which of the following cannot to be true for a polyhedron ?

How many diagonals does a hexagon have ? 

Which of the following shapes has a vertex:

How many faces does a die have