NCERT Class 6 Mathematics Ganita Prakash: Chapter 2 — Lines and Angles
This chapter introduces fundamental concepts of geometry, starting with the definition of a point as a precise location with no dimensions. It explains how points are denoted by capital letters like P, Z, and T. The text then defines a line segment as the shortest path between two points, with two distinct endpoints, denoted as AB or BA. Finally, it introduces the concept of a line, which is an extension of a line segment in both directions without end, and can be represented by letters like l or m. The chapter emphasizes that any two points uniquely determine a line. These basic ideas are crucial building blocks for understanding plane geometry and more complex shapes in mathematics.
Quick info
| Board | CBSE / NCERT |
|---|---|
| Class | Class 6 |
| Subject | Mathematics |
| Book | Ganita Prakash |
| Chapter | Chapter 2 — Lines and Angles |
| Language | English |
| PDF type | NCERT Textbook |
| Session | CBSE 2026 |
| Reading time | 3 minutes |
| Word count | 409 |
Learning outcomes
- Understand the concept of a point as a location.
- Identify and define a line segment and its endpoints.
- Define a line and its infinite extension.
- Recognize that two points determine a unique line.
Vocabulary
| Word | Meaning |
|---|---|
| Point | A precise location that has no length, breadth, or height. |
| Line Segment | The shortest path between two points, having two endpoints. |
| Line | A line segment extended infinitely in both directions. |
| Endpoints | The two points that define the beginning and end of a line segment. |
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Practice questions
- What is a point? Answer: A point is a precise location that has no length, breadth, or height.
- How is a line segment denoted? Answer: A line segment is denoted by its two endpoints, for example, AB or BA.
- What are the endpoints of a line segment called? Answer: The endpoints of a line segment are called the end points of the line segment.
- What is a line? Answer: A line is a line segment extended infinitely in both directions.
Frequently asked questions
What is a point in geometry?
A point is a fundamental geometric concept representing a precise location with no dimensions (no length, breadth, or height).
How are points represented?
Points are typically represented by a dot and denoted by a single capital letter, such as P, Z, or T.
What is a line segment?
A line segment is the shortest path between two points and has two distinct endpoints.
How do we denote a line segment?
A line segment is denoted by its two endpoints, for example, AB or BA.
What is the difference between a line segment and a line?
A line segment has two endpoints, while a line is an extension of a line segment in both directions without any end.
Can we draw a complete line?
No, a complete line cannot be drawn because it extends infinitely in both directions.
How many lines can pass through two given points?
Exactly one unique line can pass through any two given points.
Related resources
Important topics
Topics covered
NCERT Class 6 Mathematics — Ganita Prakash — Chapter 2 — Lines and Angles. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.