INTRODUCTION TO EUCLID’S GEOMETRY-True/False

Sharpen your understanding of NCERT Class 9 Maths Chapter 5 with these thoughtfully designed True/False questions on "Introduction to Euclid’s Geometry." This section tests your knowledge of key concepts including definitions, axioms, postulates, points, lines, and the legacy of Euclid. Each statement challenges you to differentiate between facts and misconceptions, reinforcing logical reasoning and exam readiness. With instant explanations provided, these true or false quiz questions will strengthen your foundation in geometry, help clarify fundamentals, and prepare you for classroom assessment as well as real-world applications of mathematical logic.

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Exercise • Jan 2026

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INTRODUCTION TO EUCLID’S GEOMETRY

by Academia Aeternum

1. Euclid is known as the father of geometry.
2. An axiom is the same as a postulate.
3. A point has no dimension.
4. A straight line is defined as having both length and breadth.
5. All right angles are equal to one another.
6. A plane surface has only length and breadth.
7. A line segment can be extended infinitely in both directions.
8. The fifth postulate of Euclid concerns parallel lines.
9. Euclid’s elements is divided into 13 books.
10. Definitions and axioms form the basis of all geometry.
11. According to Euclid, the edge of a surface is a curve.
12. A circle can be drawn with any accepted center and radius.
13. Every axiom is true only in the context of geometry.
14. A postulate must be proved before being accepted.
15. Geometry is the study of shapes, sizes, and positions of objects.
16. Euclid lived in Alexandria, Egypt.
17. The statement "the whole is greater than the part" is an axiom.
18. A line segment has infinite points on it.
19. Parallel lines are always equidistant.
20. A postulate is sometimes called a common notion.
21. Euclid’s geometry applies to curved surfaces as well.
22. Definitions are necessary for mathematical clarity.
23. All straight lines can be curved if drawn on a sphere.
24. The term "point" can be measured using a ruler.
25. Every theorem in geometry is built upon axioms and postulates.

Frequently Asked Questions

Euclid’s geometry is a logical system based on definitions, axioms, and postulates describing properties of points, lines, and planes.

Euclid, a Greek mathematician, is known as the father of geometry.

Euclid’s axioms are self-evident truths that apply to mathematics and form the foundation of geometric reasoning.

1. A straight line can be drawn joining any two points; 2. A line can be extended indefinitely; 3. A circle can be made with any center and radius; 4. All right angles are equal; 5. If a line touches two others so that interior angles sum less than 180°, lines meet.

An axiom is a universal truth, while a postulate specifically applies to geometry.

A point is a location in space with no size, dimension, or length.

A line is a length without breadth, and a plane is a flat surface that extends infinitely.

It explains the concept of parallel lines and led to the development of non-Euclidean geometries.

It forms the foundation for all higher-level mathematics and helps develop logical reasoning skills.

They underpin all modern geometry and are used in mathematical proofs and real-life applications.

A straight line is a path traced by a point moving in the same direction.

Map making, architecture, engineering design, and graphic plotting.

Euclidean geometry deals with flat surfaces; non-Euclidean geometries describe curved spaces.

Geometry originated with land measurement, but Euclid systematized it with axioms and postulates.

Point, line, plane, angle, straight line, and circle.

Definitions provide clarity and a standard language for proofs and reasoning.

“Elements” is still a basis for mathematics education and a reference for geometric proofs.

A segment is part of a line with two endpoints, a ray starts at one point and extends infinitely, and a line extends in both directions.

Geometry is used in construction, navigation, art, and technology.

Postulates are assumed true and used to logically derive theorems and geometric properties.

Drawing maps, building structures, and creating technical diagrams involve Euclidean geometry.

It enables systematic reasoning and problem-solving in mathematics.

Practice textbook exercises, revise definitions, understand proofs, and solve sample questions.

Euclid’s systematic approach revolutionized mathematics and structured logical deduction.

It’s about learning the rules and relationships between basic shapes and figures through logical steps.

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