NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 2: Geometry - Problems and SolutionsQuestion 76
Class 6 - Mathematics - Unit 2: Geometry - Problems and Solutions
Question. 76
Write the name of (a) vertices, (b) edges, and (c) faces of the prism shown in Fig. 2.48.
Answer:
(a) Vertices: B, C, D, E, F (and the sixth corresponding vertex on the hidden back corner — the sketch labels only five explicitly).
(b) Edges (those shown): BC, CD, DB, EF, FD, DE, BE, CF, DF.
(c) Faces (those visible): triangular faces BCD and DEF; lateral quadrilaterals such as BEFC, CFDB, and BDE?E (back face).
Detailed Answer with Explanation:
The solid is a triangular prism (6 vertices, 9 edges, 5 faces). The diagram shows five labelled vertices; the unseen back vertex corresponds to the sixth of the prism.