In the above figure, (i) represents a/an ___, (ii) represents a/an ___ and (iii) represents a/an ___.
face
edge
vertex
vertex, edge and face respectively.
A vertex is a corner. An edge joins two vertices. A face is an individual surface of a solid shape formed by edges.
A sphere has ________ vertex and ________ edge
Draw a cuboid. Identify its one face, one edge and a vertex. How many vertices does it have?
In the figure 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 from 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.