- What is Closed curve and Open curve
- |
- What are polygons
- |
- Classification of polygons
- |
- Convex and Concave Polygons
- |
- Regular and Irregular Polygons
- |
- Angle Sum in the Polygons
- |
- What is Quadrilaterals
- |
- Types of Quadrilaterals

In this page we have *NCERT Solutions for Understanding quadrilaterals Class 8 maths Chapter 3 * for
EXERCISE 4 . Hope you like them and do not forget to like , social share
and comment at the end of the page.

State whether True or False.

(a) All rectangles are squares.

(b) All rhombuses are parallelograms.

(c) All squares are rhombuses and also rectangles.

(d) All squares are not parallelograms.

(e) All kites are rhombuses.

(f) All rhombuses are kites.

(g) All parallelograms are trapeziums.

(h) All squares are trapeziums.

- False: All squares are rectangles but all rectangles are not squares
- True
- True
- False
- False
- True
- True
- True

Identify all the quadrilaterals that have

(a) Four sides of equal length

(b) Four right angles

i)Square and Rhombus

ii) Squares, rectangles

Explain how a square is.

(i) A quadrilateral

(ii) A parallelogram

(iii) A rhombus

(iv) A rectangle

i) Square is quadrilateral as it has four sides

ii) A square is parallelogram as opposite’s sides are parallel to each other

iii) A square is rhombus as it has four sides equal

iv) A square is rectangles since each interior angles is 90

Name the quadrilaterals whose diagonals.

(i) Bisect each other

(ii) are perpendicular bisectors of each other?

(iii) are equal

i) The diagonals of parallelogram,square,rectangles,rhombus bisect each other

ii) The diagonals of rhombus and square are perpendicular bisector of each other

Explain why a rectangle is a convex quadrilateral.

A rectangles has two diagonals and both are in the interior, hence it is convex quadrilaterals

Download this assignment as pdf

Class 8 Maths Class 8 Science

Given below are the links of some of the reference books for class 8 Math.

- Mathematics Foundation Course for JEE/Olympiad : Class 8 This book can take students maths skills further. Only buy if child is interested in Olympiad/JEE foundation courses.
- Mathematics for Class 8 by R S Aggarwal Detailed Mathematics book to clear basics and concepts. I would say it is a must have book for class 8 student.
- Pearson Foundation Series (IIT -JEE / NEET) Physics, Chemistry, Maths & Biology for Class 8 (Main Books) | PCMB Combo : These set of books could help your child if he aims to get extra knowledge of science and maths. These would be helpful if child wants to prepare for competitive exams like JEE/NEET. Only buy if you can provide help to the child while studying.
- Reasoning Olympiad Workbook - Class 8 :- Reasoning helps sharpen the mind of child. I would recommend students practicing reasoning even though they are not appearing for Olympiad.

You can use above books for extra knowledge and practicing different questions.

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