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## FAQs on RD Sharma Class 9 Solutions Chapter 14 Quadrilaterals (Ex 14.4) Exercise 14.4 - Free PDF

**1. What are the primary rules to identify a particular shape as a quadrilateral?**

There are some rules that the students need to know before identifying a particular two-dimensional shape as a quadrilateral. Though quadrilaterals have some resemblances with polygons, all polygons cannot be considered quadrilaterals because there are some criteria that need to be fulfilled. First of all, the quadrilaterals must have four sides in a closed shaper and four angles whose sum should be 360 degrees. The opposite sides of the quadrilateral must be parallel to each other.

**2. How to identify a quadrilateral? **

A quadrilateral is called so because it has four sides that are congruent and four angles. In order to be identified as a quadrilateral, any two-dimensional shape needs to have four sides that must be parallel to each other and must have four angles that must be right angles, which means each of the angles should be 90°. It is quite evident from the answer that measuring the angles between the sides of a quadrilateral accurately plays a very important role in identifying the same.

**3. Why is understanding the concept of quadrilaterals important?**

The concept has been introduced in the syllabus of the students who are preparing for the class 9 examinations and this chapter is very important. Introducing this concept to the students at an early age will ensure that they will never forget the concept and ideas associated with the subject matter.

Identifying various geometrical shapes including quadrilaterals is very important for those who are planning to study engineering and architecture. The basic knowledge of all these shapes will come in handy for those students who will design floor plans while studying engineering.

**4. Can the students join live classes on Vedantu in order to clarify their doubts?**

Vedantu is a one-stop solution for students who face difficulties in understanding concepts and need expert guidance and suggestions to learn the subject in a better manner. Students can join live classes to get the true experience of digital classrooms and at the same time, they can clarify their doubts by asking their queries once the classroom session is over. The mentors will also provide printable and downloadable documents in PDF format that will make their learning process easier and organised.