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Chapter 7 of 14
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Quadrilaterals

CBSE · Class 8 · Mathematics

Flashcards for Quadrilaterals — CBSE Class 8 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

84 questions60 flashcards5 concepts

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Card 1Quadrilateral basics

What is a quadrilateral?

Answer

A quadrilateral is a four-sided figure. The word comes from Latin: quadri means four and latus means sides. Rectangles, squares, rhombuses, kites, trapeziums, and parallelograms are all special types

Card 2चतुर्भुज की मूल बातें

चतुर्भुज क्या होता है?

Answer

चतुर्भुज एक चार भुजाओं वाली आकृति है। यह शब्द लैटिन भाषा से आया है: क्वाड्री का अर्थ है चार और लैटस का अर्थ है भुजाएँ। आयत, वर्ग, समचतुर्भुज, पतंग, समलम्ब चतुर्भुज और समानांतर चतुर्भुज सभी विशेष प्रका

Card 3चतुर्भुज के कोणों का योग

किसी भी चतुर्भुज के कोणों का योग क्या होता है?

Answer

किसी भी चतुर्भुज के सभी कोणों का योग 360° होता है। यह एक विकर्ण खींचकर और चतुर्भुज को दो त्रिभुजों में विभाजित करके ज्ञात किया जाता है। चूँकि प्रत्येक त्रिभुज के कोणों का योग 180° होता है, इसलिए कुल य

Card 4Angle sum of quadrilateral

What is the sum of the angles of any quadrilateral?

Answer

The sum of all angles in any quadrilateral is 360°. This is found by drawing a diagonal and splitting the quadrilateral into two triangles. Since each triangle has angle sum 180°, the total becomes 18

Card 5Angle sum reasoning

Why is it impossible for a quadrilateral to have three right angles and one non-right angle?

Answer

A quadrilateral has angle sum 360°. Three right angles already make 270°. The fourth angle must then be 360° - 270° = 90°. So the fourth angle cannot be anything other than a right angle.

Card 6कोण योग तर्क

किसी चतुर्भुज में तीन समकोण और एक गैर-समकोण होना क्यों असंभव है?

Answer

एक चतुर्भुज में कोणों का योग 360° होता है। तीन समकोण पहले से ही 270° बनाते हैं। चौथा कोण 360° - 270° = 90° होना चाहिए। इसलिए चौथा कोण समकोण के अलावा कुछ और नहीं हो सकता।

Card 7आयत की परिभाषा

एक आयत को परिभाषित करें।

Answer

आयत एक चतुर्भुज है जिसके सभी कोण 90° होते हैं। आयत की विपरीत भुजाएँ बराबर और समानांतर होती हैं। उदाहरण: चार समकोणों वाली कोई भी चतुर्भुज आकृति आयत होती है।

Card 8Rectangle definition

Define a rectangle.

Answer

A rectangle is a quadrilateral in which all the angles are 90°. A rectangle also has opposite sides equal and parallel. Example: any four-sided figure with four right angles is a rectangle.

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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.
How many flashcards are available for Quadrilaterals?
There are 60 flashcards for Quadrilaterals covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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