Q76 of 78 Page 23

Write the name of

(a) vertices


(b) edges, and


(c) faces of the prism shown in Fig. 2.48.


a) Vertices: A, B, C, D, E, F


b) Edges: AB, BC, AC, DE, EF, DF, AE, BD, CF


c) Faces: Two triangular faces – ABC, DEF and three rectangular faces – BDFC, ACFE, ABDE


More from this chapter

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74

Can we have two acute angles whose sum is

(a) an acute angle? Why or why not?


(b) a right angle? Why or why not?


(c) an obtuse angle? Why or why not?


(d) a straight angle? Why or why not?


(e) a reflex angle? Why or why not?

 75

Can we have two obtuse angles whose sum is

(a) a reflex angle? Why or why not?


(b) a complete angle? Why or why not?

 77

How many edges, faces and vertices are there in a sphere?

 78

Draw all the diagonals of a pentagon ABCDE and name them.