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Triangles

ICSE · Class 6 · Mathematics

Complete topic list for Triangles in ICSE Class 6 Mathematics. Key concepts, sub-topics, and what to focus on for board exams.

92 questions28 flashcards5 concepts

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4 Topics · ICSE Class 6 Mathematics

Topics in Triangles

1

Basic Elements of a Triangle

  • A triangle is a closed figure formed by three line segments.
  • It has 3 sides, 3 vertices, and 3 interior angles.
  • The sum of all interior angles of a triangle is always 180°.
2

Exterior Angles of a Triangle

  • An exterior angle is formed when one side of a triangle is extended.
  • Each exterior angle is adjacent to an interior angle and forms a linear pair (sum = 180°).
  • An exterior angle is equal to the sum of the two opposite interior angles.
3

Types of Triangles

  • Triangles are classified based on angles and sides.
  • Based on angles: Acute-angled, Right-angled, Obtuse-angled.
  • Based on sides: Scalene, Isosceles, Equilateral.
4

Altitude and Median of a Triangle

  • An altitude is a perpendicular line from a vertex to the opposite side.
  • A triangle has three altitudes, and they meet at a point called the orthocentre.
  • A median joins a vertex to the midpoint of the opposite side.

Key Concepts

Central concept: Triangle

Definition of TriangleVerticesSidesAngles (Interior)Exterior AnglesTypes of Triangles by AnglesTypes of Triangles by SidesAltitude

Frequently Asked Questions

What are the important topics in Triangles for ICSE Class 6 Mathematics?
Triangles covers several key topics that are frequently asked in ICSE Class 6 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Triangles — ICSE Class 6 Mathematics?
Understand the core concepts first, then work through the 92 practice questions available for this chapter. Revise formulas and 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 22 chapters — ICSE Class 6 Mathematics Syllabus

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