NCERT Solutions for Class 6 Maths Chapter 4: Basic Geometrical Ideas

The chapter teaches the students to use the basic tools of mathematics to measure various shapes and dimensions around us. Geometrical ideas are reflected in all forms of art, measurements, architecture, engineering, cloth designing etc. In order to measure and construct the geometrical figures, knowledge of geometry becomes important. The students of class 6 are introduced to terms like points, line segment, line, intersecting lines, ray, curve etc. The above-mentioned topics are inter-related. Many new terms have been introduced, and students are advised to keep in mind that these terms are just the introduction of geometry. Enough attention must be given to grasping the fundamental concepts of geometry. One topic leads to another and thus builds the ability to co-relate in the students. This chapter also lays the groundwork for the further complex topics which are introduced in the subsequent chapters of mensuration taught in higher classes. The topics covered in this chapter lay the ground for a better understanding of fractions which will be taught in class 6 in subsequent chapters. All the topics of this chapter are essential for the understanding of further chapters of only class 6 but higher classes as well. This chapter deals with the following concepts:

• Points
• Line segment
• Line
• Intersecting lines
• Ray
• Curve
• Polygon
• Quadrilateral & its properties
• Circle, chord, radius, diameter, circumference, and semi-circles