Polygons (Ex 14A) Exercise 14.1 - Free PDF
FAQs on RS Aggarwal Solutions Class 8 Chapter-14 Polygons (Ex 14A) Exercise 14.1
1. Where can I find RS Aggarwal Solutions Class 8 Chapter-14 to understand concepts?
Class 8 Students should first solve the NCERT exercises to get done with basics and then they can move on to reference books and questions on the internet. But NCERT is a must. Class 8 students are recommended to solve RD Sharma and RS Aggarwal by many teachers as it contains many different types of problems that help to clear the concept. The test papers at the end of these books are really useful as it makes an exam-like situation and helps to test a student before a real examination.
2. What are the properties of Polygons according to RS Aggarwal Solutions Class 8 Chapter-14?
A polygon is a two-dimensional shape with straight sides that are completely closed. The properties of polygons depend on their sides and angles, Some of the polygon properties are-
The sum total of all the interior angles of an n-sided polygon (n – 2) × 180°.
The number of diagonals in a polygon with n sides is always equal to n(n – 3)/2
The number of triangles formed by joining the diagonals from one corner of a polygon is always equalled to (n – 2).
The measure of each interior angle of an n-sided regular polygon is always equal to [(n – 2) × 180°]/n.
The measure of each exterior angle of an n-sided regular polygon is always equal to (360°/n).
3. What are interior angles according to RS Aggarwal Solutions Class 8 Chapter-14?
The Interior angle is the angle of a polygon that is formed inside the 2 adjacent sides. The sum of interior angles of a polygon is always constant. It doesn't matter if the polygon is regular or irregular, the sum total of its interior angles always remains the same. Mathematically, the sum of the interior angles of the polygon is-
Sum of all the Interior Angles of a Polygon = 180 (n-2)°
For example, Triangle has 3 sides and when n=3, The sum of interior angles always comes out to be 180°.
4. What are the properties of the Equilateral Triangle mentioned in RS Aggarwal Solutions Class 8 Chapter-14?
An equilateral angle is a polygon having three equal sides. The term equilateral is divided into two parts where 'equi' which means equivalent and the term 'lateral' means sides.
Its important properties are-
All 3 sides are equal.
All 3 angles of equilateral angle are equal and 60°
Medians, angle bisectors, and altitudes are equal
The dividing perpendicular of the equilateral triangle from the angle of the vertex is parted into 2 equal halves of 30° each.
The area of an equilateral triangle is √3/4(t)²
The perimeter of an equilateral triangle is 3a. (where ‘t’ is the side of the given equilateral triangle)
5. How to get full marks in class 8 maths?
To score full marks in class 8 maths, firstly the student should have clear concepts. Class 8 introduces some new concepts and advances on old concepts. Class 8 should pay attention in class and ask doubts. Vedantu’s official Youtube channel can also help the child clear their concept. Other than this, a student must practice a lot starting with finishing NCERT Exercises and then moving onto reference books such as RS Aggarwal and RD Sharma. Bringing full marks in class 8 is achievable with a little bit of hard work and the right guidance.
