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Syllabus

Lines and Angles — Syllabus

ICSE · Class 7 · Mathematics

What Lines and Angles covers in ICSE Class 7 Mathematics: 4 topics, for the 2026-27 session. Part of the ICSE Class 7 Mathematics syllabus.

59 questions30 flashcards2 formulas & key relations5 concepts

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4 Topics · ICSE Class 7 Mathematics · 2026-27

Topics in Lines and Angles

1

Basic Geometrical Ideas

  • A point shows position only. It has no length, no breadth, and no thickness.
  • A line has length but no breadth or thickness. It extends infinitely in both directions.
  • A ray starts from a fixed point and extends infinitely in one direction.
2

Angles and Their Parts

  • An angle is formed when two line segments or two rays have a common end-point.
  • The common end-point is called the vertex.
  • The two line segments or rays are called the arms of the angle.
3

Types of Angles

  • An acute angle measures less than 90°.
  • A right angle measures 90°.
  • An obtuse angle measures between 90° and 180°.
4

Angles About a Point and Related Angle Pairs

  • The sum of all angles formed about a point is always 360°.
  • Adjacent angles have a common vertex, a common arm, and the other arms lie on opposite sides of the common arm.
  • Vertically opposite angles are formed when two straight lines intersect.

Key Concepts

Central concept: Lines and Angles

Basic ideas of geometryPointLineRayLine segmentRelationships among points and linesCollinear pointsIntersecting lines

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Frequently Asked Questions

What are the important topics in Lines and Angles for ICSE Class 7 Mathematics?
Key topics in Lines and Angles include Basic Geometrical Ideas, Angles and Their Parts, Types of Angles, Angles About a Point and Related Angle Pairs. Study these first, then practise questions on each for Class 7 exams.
How should I revise Lines and Angles for Class 7 exams?
Learn the core ideas first, then work through the 59 practice questions on Lines and Angles. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 7 Mathematics Syllabus

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