#### Chapters

Chapter 2: Rational Numbers

Chapter 3: Fractions (Including Problems)

Chapter 4: Decimal Fractions (Decimals)

Chapter 5: Exponents (Including Laws of Exponents)

Chapter 6: Ratio and Proportion (Including Sharing in a Ratio)

Chapter 7: Unitary Method (Including Time and Work)

Chapter 8: Percent and Percentage

Chapter 9: Profit, Loss and Discount

Chapter 10: Simple Interest

Chapter 11: Fundamental Concepts (Including Fundamental Operations)

Chapter 12: Simple Linear Equations (Including Word Problems)

Chapter 13: Set Concepts (Some Simple Divisions by Vedic Method)

Chapter 14: Lines and Angles (Including Construction of angles)

Chapter 15: Triangles

Chapter 16: Pythagoras Theorem

Chapter 17: Symmetry (Including Reflection and Rotation)

Chapter 18: Recognition of Solids (Representing 3-D in 2-D)

Chapter 19: Congruency: Congruent Triangles

Chapter 20: Mensuration

Chapter 21: Data Handling

Chapter 22: Probability

## Chapter 18: Recognition of Solids (Representing 3-D in 2-D)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 18 Recognition of Solids (Representing 3-D in 2-D) Exercise 18

**Identify if the following net can be used to form a cube:**

Yes

No

**Identify if the following net can be used to form a cube:**

Yes

No

**Identify if the following net can be used to form a cube:**

Yes

No

**Identify if the following net can be used to form a cube:**

Yes

No

**Identify if the following net can be used to form a cube:**

Yes

No

Draw at least three different nets for making a cube.

The figure, given below, shows shadows of some 3D object when seen under the lamp of an overhead projector:

A square

In this case, name the object.

The figure, given below, shows shadows of some 3D object when seen under the lamp of an overhead projector:

A rectangle

In this case, name the object.

The figure, given below, shows shadows of some 3D object when seen under the lamp of an overhead projector:

A triangle

In this case, name the object.

**Using Euler’s formula, find the values of a, b, c and d.**

Faces |
a | 5 | 20 | 6 |

Vertices |
6 | b | 12 | d |

Edges |
12 | 9 | c | 12 |

Dice are cubes with dots or dots on the face. Opposite faces of a die always have a total of seven on them.

In the given below net to make dice (cube), the numbers inserted in the square indicate the number of dots in it.

Insert suitable numbers in the blank so that numbers in opposite faces of the die have a total of seven dots.

Dice are cubes with dots or dots on the face. Opposite faces of a die always have a total of seven on them.

In the given below net to make dice (cube), the numbers inserted in the square indicate the number of dots in it.

Insert suitable numbers in the blank so that numbers in opposite faces of the die have a total of seven dots.

The following figure represent the nets of some solid. Name the solid

The following figure represent the nets of some solid. Name the solid

Draw a map of your classroom using proper scale and symbols for different objects.

Draw a map of your school compound using proper scale and symbols for various features like a playground, main building, garden, etc.

In the map of India, the distance between the two cities is 13.8 cm.

Taking scale: 1 cm = 12 km, find the actual distance between these two cities.

## Chapter 18: Recognition of Solids (Representing 3-D in 2-D)

## Selina solutions for Concise Mathematics Class 7 ICSE chapter 18 - Recognition of Solids (Representing 3-D in 2-D)

Selina solutions for Concise Mathematics Class 7 ICSE chapter 18 (Recognition of Solids (Representing 3-D in 2-D)) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Mathematics Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Concise Mathematics Class 7 ICSE chapter 18 Recognition of Solids (Representing 3-D in 2-D) are Concept of Recognition of Solids, Concept for Mapping the Space Around Approximately Through Visual Estimation., Faces, Edges and Vertices.

Using Selina Class 7 solutions Recognition of Solids (Representing 3-D in 2-D) exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

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