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Chapters
2: Exponents
3: Squares and Square Root
4: Cubes and Cube Roots
5: Playing with Numbers
6: Sets
7: Percent and Percentage
8: Profit, Loss and Discount
9: Interest
10: Direct and Inverse Variations
11: Algebraic Expressions
12: Identities
13: Factorisation
14: Linear Equations in one Variable
15: Linear Inequations
16: Understanding Shapes
17: Special Types of Quadrilaterals
18: Constructions
▶ 19: Representing 3-D in 2-D
20: Area of a Trapezium and a Polygon
21: Surface Area, Volume and Capacity
22: Data Handling
23: Probability
![Selina solutions for Concise Mathematics [English] Class 8 ICSE chapter 19 - Representing 3-D in 2-D - Shaalaa.com](/images/concise-mathematics-english-class-8-icse_6:3b78c4422443458583dde48f228ef792.jpg "Selina solutions for Concise Mathematics [English] Class 8 ICSE chapter 19 - Representing 3-D in 2-D")
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Solutions for Chapter 19: Representing 3-D in 2-D
Below listed, you can find solutions for Chapter 19 of CISCE Selina for Concise Mathematics [English] Class 8 ICSE.
Selina solutions for Concise Mathematics [English] Class 8 ICSE 19 Representing 3-D in 2-D Exercise 19 [Page 220]
If a polyhedron has 10 faces and 8 vertices, find the number of edges in it.
If a polyhedron has 10 vertices and 7 faces, find the number of edges in it.
State, the number of faces, number of vertices and number of edges of:
(i) a pentagonal pyramid
(ii) a hexagonal prism
Verify Euler’s formula for the following three-dimensional figures:
Can a polyhedron have 8 faces, 26 edges, and 16 vertices?
Can a polyhedron have:
(i) 3 triangles only?
(ii) 4 triangles only?
(iii) a square and four triangles?
Using Euler's formula, find the values of x, y, z.
| Faces | Vertices | Edges | |
| (i) | x | 15 | 20 |
| (ii) | 6 | y | 8 |
| (iii) | 14 | 26 | z |
What is the least number of planes that can enclose a solid? What is the name of the solid?
Is a square prism the same as a cube?
The Dimension of a cubical is 6 cm x 4 cm x 2 cm. Draw two different nets of it.
Dice are cubes where the sum of the numbers on the opposite faces is 7. Find the missing numbers a, b and c.
Name the polyhedron that can be made by folding each of the following nets:
(i)
(ii)
(iii)
Draw nets for the following polyhedrons:
Solutions for 19: Representing 3-D in 2-D
Selina solutions for Concise Mathematics [English] Class 8 ICSE chapter 19 - Representing 3-D in 2-D
Shaalaa.com has the CISCE Mathematics Concise Mathematics [English] Class 8 ICSE CISCE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Selina solutions for Mathematics Concise Mathematics [English] Class 8 ICSE CISCE 19 (Representing 3-D in 2-D) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Concise Mathematics [English] Class 8 ICSE chapter 19 Representing 3-D in 2-D are 2dimensional Perspective of 3dimensional Objects, Concept of Polyhedron, Euler's Formula, Nets of 3D Figures, Faces, Edges and Vertices of Polyhedron, Concept of Polyhedron.
Using Selina Concise Mathematics [English] Class 8 ICSE solutions Representing 3-D in 2-D exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Selina Solutions are essential questions that can be asked in the final exam. Maximum CISCE Concise Mathematics [English] Class 8 ICSE students prefer Selina Textbook Solutions to score more in exams.
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