Anser in the blank
A) The triangular prism has--------- edges.
B) The tetrahedron has ----- edges.
C) The square based pyramid has------- edges.
Answers
Answer:
Write down the number of faces of each of the following figures:
(i) Cuboid
(ii) Cube
(iii) Triangular prism
(iv) Square pyramid
(v) Tetrahedron
ANSWER:
(i) A cuboid has 6 faces, namely ABCD, EFGH, HDAE, GCBF, HDCG and EABF.
(ii) A cube has 6 faces, namely IJKL, MNOP, PLIM, OKJN, LKOP and IJNM.
(iii) A triangular prism has 5 faces (3 rectangular faces and 2 triangular faces), namely QRUT, QTVS, RUVS, QRS and TUV.
(iv) A square pyramid has 5 faces (4 triangular faces and 1 square face), namely OWZ, OWX, OXY, OYZ and WXYZ.
(v) A tetrahedron has 4 triangular faces, namely KLM, KLN, LMN and KMN.
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Question 2:
Write down the number of edges of each of the following figures:
(i) Tetrahedron
(ii) Rectangular pyramid
(iii) cube
(iv) Triangular prism
ANSWER:
(i) A tetrahedron has 6 edges, namely KL, LM, LN, MN, KN and KM.
(ii) A rectangular pyramid has 8 edges, namely AB, AE, AD, AC, EB, ED, DC and CB.
(iii) A cube has 12 edges, namely PL, LK, KO, OP, MN, NJ, JI, IM, PM, LI, ON and KJ.
(iv) A triangular prism has 9 edges, namely QR, RS, QS, TU, TV, UV, QT, RU, and SV.
Answer:
A) 9
B) 6
C) 8
hope this helps you