Draw a net of a cuboid having same breadth and height, but length double the breadth.

In each of the following figures, write the number of lines of symmetry and order of rotational symmetry.

[Hint: Consider these as 2-D figures not as 3-D objects.]

In the figure 12.24 of a cube,

i. Which edge is the intersection of faces EFGH and EFBA?

ii. Which faces intersect at edge FB?

iii. Which three faces form the vertex A?

iv. Which vertex is formed by the faces ABCD, ADHE and CDHG?

v. Give all the edges that are parallel to edge AB.

vi. Give the edges that are neither parallel nor perpendicular to edge BC.

vii. Give all the edges that are perpendicular to edge AB.

viii. Give four vertices that do not all lie in one plane.

Draw the nets of the following:

(i) Triangular prism

(ii) Tetrahedron

(iii) Cuboid

Draw a net of the solid given in the figure 12.25: