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Revision Notes

Quadrilaterals

CBSE · Class 8 · Mathematics

Quick revision notes for Quadrilaterals — CBSE Class 8 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

84 questions60 flashcards5 concepts

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Key Topics to Revise

1

1. Basic idea of a quadrilateral

  • The word quadrilateral comes from Latin: quadri means four and latus means sides.
  • A quadrilateral has four sides and four angles.
  • The angles of a quadrilateral are the angles between its sides.
2

2. Rectangle and square

  • A rectangle is a quadrilateral in which all angles are 90°.
  • A rectangle also has opposite sides equal.
  • The opposite sides of a rectangle are parallel.
3

3. Angle sum of a quadrilateral

  • A diagonal divides a quadrilateral into two triangles.
  • The sum of angles of a triangle is 180°.
  • So the sum of all angles in any quadrilateral is 360°.
4

4. Parallelogram

  • A parallelogram is a quadrilateral with two pairs of parallel opposite sides.
  • A parallelogram is a larger set than rectangles.
  • The diagonals of a parallelogram bisect each other.

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Full Notes

Key Concepts

A quadrilateral is a fourA rectangle is a quadrilateralA square is a quadrilateralA quadrilateral can be split intoA parallelogram is a quadrilateral

Frequently Asked Questions

What are the important topics in Quadrilaterals for CBSE Class 8 Mathematics?
Quadrilaterals covers several key topics that are frequently asked in CBSE Class 8 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Quadrilaterals — CBSE Class 8 Mathematics?
Understand the core concepts first, then work through the 84 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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