#### Chapters

Chapter 2: Powers

Chapter 3: Squares and Square Roots

Chapter 4: Cubes and Cube Roots

Chapter 5: Playing with Numbers

Chapter 6: Algebraic Expressions and Identities

Chapter 7: Factorization

Chapter 8: Division of Algebraic Expressions

Chapter 9: Linear Equation in One Variable

Chapter 10: Direct and Inverse Variations

Chapter 11: Time and Work

Chapter 12: Percentage

Chapter 13: Proft, Loss, Discount and Value Added Tax (VAT)

Chapter 14: Compound Interest

Chapter 15: Understanding Shapes-I (Polygons)

Chapter 16: Understanding Shapes-II (Quadrilaterals)

Chapter 17: Understanding Shapes-III (Special Types of Quadrilaterals)

Chapter 18: Practical Geometry (Constructions)

Chapter 19: Visualising Shapes

Chapter 20: Mensuration - I (Area of a Trapezium and a Polygon)

Chapter 21: Mensuration - II (Volumes and Surface Areas of a Cuboid and a Cube)

Chapter 22: Mensuration - III (Surface Area and Volume of a Right Circular Cylinder)

Chapter 23: Data Handling-I (Classification and Tabulation of Data)

Chapter 24: Data Handling-II (Graphical Representation of Data as Histograms)

Chapter 25: Data Handling-III (Pictorial Representation of Data as Pie Charts or Circle Graphs)

Chapter 26: Data Handling-IV (Probability)

Chapter 27: Introduction to Graphs

#### RD Sharma Mathematics Class 8 by R D Sharma (2019-2020 Session)

## Chapter 15: Understanding Shapes-I (Polygons)

#### Chapter 15: Understanding Shapes-I (Polygons) Exercise 15.10 solutions [Pages 5 - 6]

Draw rough diagram to illustrate the following Open curve .

Draw rough diagram to illustrate the following Closed curve .

Classify the following curve as open or closed:

Classify the following curve as open or closed:

Classify the following curve as open or closed:

Classify the following curve as open or closed:

Classify the following curve as open or closed:

Classify the following curve as open or closed:

Draw a polygon and shade its interior. Also draw its diagonals, if any.

Illustrate, if posible, one of the following with a rough diagram:

A colsed curve that is not a polygon.

Illustrate, if posible, one of the following with a rough diagram:

An open curve made up entirely of line segments.

Illustrate, if posible, one of the following with a rough diagram:

A polygon with two sides.

Following are some figures: Classify each of these fugures on the basis of the following:

(i) Simple curve

(ii) Simple closed curve

(iii) Polygon

(iv) Convex polygon

(v) Concave polygon

(vi) Not a curve

How many diagonal does of the following have A convex quadrilateral .

How many diagonal does of the following have A regular hexagon .

How many diagonal does of the following have A triangle .

What is a regular polygon? State the name of a regular polygon of 3 sides .

What is a regular polygon? State the name of a regular polygon of 4 sides .

What is a regular polygon? State the name of a regular polygon of 6 sides .

## Chapter 15: Understanding Shapes-I (Polygons)

#### RD Sharma Mathematics Class 8 by R D Sharma (2019-2020 Session)

#### Textbook solutions for Class 8

## RD Sharma solutions for Class 8 Mathematics chapter 15 - Understanding Shapes-I (Polygons)

RD Sharma solutions for Class 8 Maths chapter 15 (Understanding Shapes-I (Polygons)) 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 CBSE Mathematics for Class 8 by R D Sharma (2019-2020 Session) solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 8 Mathematics chapter 15 Understanding Shapes-I (Polygons) are Regular and Irregular Polygons, Angle Sum Property, Sum of the Measures of the Exterior Angles of a Polygon, Concept of Trapezium, Concept of Kite, Elements of a Parallelogram, Diagonals of a Parallelogram, Concept of Rhombus, Concept of a Rectangle, Classification of Polygons, Concept of Diagonals, Convex and Concave Polygons, Introduction of Quadrilaterals, Concept of a Square, Concept of Parallelogram.

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