Understanding Quadrilaterals — Class 8 MCQs with Answers
Class 8 CBSE Mathematics · Chapter 103
Pre-2026 syllabusThis chapter is from the older NCERT book. See the 2026-27 Class 8 Mathematics chapters →
72 practice questions · 24 Easy · 24 Medium · 24 Hard · Updated
Jump to the 6 solved questions
Practise the most important Class 8 CBSE Mathematics questions from Chapter 103, "Understanding Quadrilaterals". You get 9 timed quizzes made from 72 NCERT-based MCQs, with answers and explanations. The questions are split into 24 Easy, 24 Medium and 24 Hard. Warm up on the basics, then move on to the exam-level questions that top scorers in CBSE Board exams get right.
To score well in "Understanding Quadrilaterals", focus on fast problem-solving, formula recall and step-by-step working. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This helps you stay accurate when time is short, just as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Understanding Quadrilaterals, then move to Medium and Hard to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 8 Mathematics mastery score. Try the 6 sample questions below: tap an option to see the answer and a worked explanation. Sign in free to start practising.
Understanding Quadrilaterals — important questions & MCQs with answers (Class 8 Mathematics)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. Tap an option to check yourself.
0 of 6 answered
- Q1 of 6Easy
Sum of interior angles of a triangle:
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Answer: 180°
Explanation: Standard.
- Q2 of 6Easy
Each angle of a square measures:
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Answer: 90°
Explanation: A square has four equal right angles.
- Q3 of 6Medium
Sum of interior angles of n-gon:
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Answer: (n−2)·180°
Explanation: Standard formula.
- Q4 of 6Medium
In a parallelogram, opposite angles are:
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Answer: Equal
Explanation: Property of parallelogram.
- Q5 of 6Hard
Sum of exterior angles of any polygon:
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Answer: 360°
Explanation: Always 360° regardless of sides.
- Q6 of 6Hard
Diagonals of a rhombus:
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Answer: Bisect each other at right angles
Explanation: Perpendicular bisectors.
Understanding Quadrilaterals notes: key concepts (Class 8 Mathematics)
This chapter covers polygons, the angle-sum properties of polygons, and the properties of special quadrilaterals like parallelograms, rhombuses and trapeziums.
- Polygons
- Closed figures made of line segments; classified as convex/concave and regular/irregular.
- Angle sum of a polygon
- The interior angles of an n-sided polygon add to (n − 2) × 180°.
- Exterior angles
- The sum of the exterior angles of any polygon is always 360°.
- Parallelogram properties
- Opposite sides and angles are equal; adjacent angles are supplementary; diagonals bisect each other.
- Special quadrilaterals
- Rhombus (diagonals perpendicular), rectangle (equal diagonals), square (both), and trapezium (one pair of parallel sides).
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Understanding Quadrilaterals — FAQs
What are the key concepts in Class 8 Mathematics Understanding Quadrilaterals?+
This chapter covers polygons, the angle-sum properties of polygons, and the properties of special quadrilaterals like parallelograms, rhombuses and trapeziums. Key ideas include Polygons, Angle sum of a polygon, Exterior angles, Parallelogram properties, Special quadrilaterals.
What does Class 8 Mathematics Chapter 103 (Understanding Quadrilaterals) cover on XamBaaz?+
It has 72 NCERT-based MCQs on "Understanding Quadrilaterals": 24 Easy, 24 Medium and 24 Hard. Together they make 9 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE Board exams.
Are these "Understanding Quadrilaterals" questions free to practise?+
Yes. Sign in with Google to practise "Understanding Quadrilaterals" free. Full unlimited access is ₹999/year. One year from the day you pay. You stay in Class 8 till 31 March; on 1 April your account moves up to Class 9 and the rest of your year carries over. No chapter is charged separately.
How should I revise "Understanding Quadrilaterals" for the exam?+
Start with the Easy quiz to check your basics, then try Medium and Hard to practise applying them. There are 9 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Understanding Quadrilaterals" MCQs available with answers?+
Yes. 6 sample questions are on this page with answers: tap an option, or "Show answer", to see the correct option and a step-by-step explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Understanding Quadrilaterals" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Understanding Quadrilaterals (Class 8 Mathematics)?+
The questions that matter most test Polygons, Angle sum of a polygon, Exterior angles, Parallelogram properties, Special quadrilaterals. This page shows 6 solved important MCQs with answers and explanations. Sign in to practise all 72 questions on the chapter as timed quizzes.
Is there an online quiz for Understanding Quadrilaterals?+
Yes — Class 8 Mathematics Understanding Quadrilaterals has timed online quizzes at Easy, Medium and Hard levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.
Are there question answers and extra questions for Understanding Quadrilaterals (Class 8 Mathematics)?+
Yes. This page has 6 solved questions on Understanding Quadrilaterals, each with the correct answer and a short explanation. Sign in to practise all 72 questions on the chapter as timed quizzes.