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NCERT Solutions
Class 8
Maths Term 2
Chapter 4 Exploring Some Geometric Themes
Exercise 4.2

NCERT Class 8 Maths Ch. 4 Exploring Some Geometric Themes Other Exercises:-

Exercise 4.1

Exercise 4.2

Exercise 4.3

Exercise 4.4

Exercise 4.5

Exercise 4.6


NCERT Solutions Class 8 Maths All Chapters:-

Chapter 1 : Fractions in Disguise

Chapter 2 : The Baudhayana - The Pythagoras Theorem

Chapter 3 : Proportional Reasoning - 2

Chapter 4 : Exploring Some Geometric Themes

Chapter 5 : Tales by Dots and Lines

Chapter 6 : Algebra Play

Chapter 7 : Area


Frequently Asked Questions

The Koch Snowflake is formed by repeatedly dividing each side into three parts and replacing the middle part with two sides of a smaller equilateral triangle.

The construction begins with an equilateral triangle, which forms Step 0 of the shape sequence.

At each stage, every existing side is replaced by four smaller sides, increasing the total number of sides.

The number of sides at the nth step follows the pattern 3 × 4ⁿ.

For a starting equilateral triangle with side length 1 unit, the perimeter at the nth step follows the pattern 3 × (4/3)ⁿ units.

ALLEN NCERT Solutions explain the Koch Snowflake construction, number of sides, and nth-step perimeter with clear step-by-step solutions.

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ISO

Exploring Some Geometric Terms Exercise 4.2 Class 8 Maths – Chapter 4 NCERT Solutions

We have provided NCERT Solutions for Class 8 Maths Chapter 4 Exploring Some Geometric Themes Exercise 4.2 to assist learners in comprehending the concepts better. These solutions contain clear explanations of the construction of the Koch Snowflake and the patterns involved that assist learners to comprehend the exercise and solve the questions systematically.Exercise 4.2 focuses on the Koch Snowflake, its successive construction stages, the increasing number of sides, and the pattern followed by its perimeter at the nth step.

1.0Download Class 8 Maths Chapter 4 Ex 4.2 NCERT Solutions PDF

Students can download the detailed NCERT Solutions PDF for Class 8 Maths Chapter 4 Exercise 4.2 from the link provided below.

Chapter 4 : Exploring Some Geometric Themes Exercise 4.2

2.0Detailed NCERT Solutions on Geometric Terms Exercise 4.2 Class 8 Maths (Ganita Prakash Term 2)

1. Draw the initial few steps (at least till Step 2) of the shape sequence that leads to the Koch Snowflake.

Step 0

Step 1

Step 2

Know snowflake

2. Find the number of sides in the nth step of the shape sequence that leads to the Koch Snowflake.

Sol. Number of sides: Step-0: 3 Step-1: 3×4=12 Step-2: 3×42=48 Step-3: 3×43=192 . .

Step n: 3×4n

3. Find the perimeter of the shape at the nth step of the sequence. Take the starting equilateral triangle to have a side length of 1 unit.

Sol. Perimeter of koch snowflake Step-0: 3 units Step-1: 3×(34​)1 units Step-2: 3×(34​)2 units Step-3: 3×(34​)3 units Step-4: 3×(34​)4 units ㅁ

Step n : 3×(34​)n Perimeter of step n=3(34​)n units

3.0Key Concepts of Chapter 4 Geometric Terms Exercise 4.2

  • Koch Snowflake construction
  • Fractal and self-similar patterns
  • Successive stages of construction
  • Replacement of line segments
  • Number of sides at the nth stage
  • Perimeter pattern of the Koch Snowflake
  • Generalisation of the nth-stage pattern

4.0Benefits of NCERT Solutions Class 8 Maths Chapter 4 Exercise 4.2

  • Explains the successive construction stages of the Koch Snowflake.
  • Shows how each side is replaced by four smaller line segments.
  • Makes the increasing number of sides at each stage easier to follow.
  • Helps identify the pattern in the number of sides from one stage to the next.
  • Explains the perimeter pattern when the starting triangle has a side length of 1 unit.
  • Helps determine the perimeter of the Koch Snowflake at the nth step.
  • Makes the nth-stage patterns in the Koch Snowflake easier to understand.