Parallelogram Class 9 R S Aggarwal, Math, ABCD is a parallelogram in which angle A equals to 72 deg

Parallelogram Class 9 R S Aggarwal, Math, ABCD is a parallelogram in which angle A equals to 72 deg
ABCD is a parallelogram in which angle A equals to 72 degree. Calculate Angle B, C and D.

Learn Quadrilaterals from class 9th chapter 8 and entire NCERT Math from class 9th, 10th, 11th and 12th on our website

In all these videos on Quadrilaterals from class 9th chapter 8 I have always focused on explaining the basics and then solving the questions. My way of solving question will always refer back to the basics explained previously so that students can make the connect between basics and application of them.
Let’s now start about the Quadrilaterals from class 9th chapter 8:
In this chapter of Quadrilaterals, we will talk about the different types of Quadrilaterals and their specification.

Once we know the types of quadrilaterals, we will move into the theorems part and then we will start solving the questions from each exercise.

Types of Quadrilaterals:

Parallelogram
Rhombus
Rectangle
Square
Trapezium
Isosceles Trapezium
Kite

Theorems:
Diagonals of a parallelogram divides it into two congruent triangles
In parallelogram opposite sides are equal
Diagonals of a parallelogram bisect each other
Line segment joining the mid points of two sides of a triangle is parallel and half of the third side

Please use this link for the YouTube playlist of quadrilaterals Class 9th:

Probability Class 9 NCERT Solutions

Statistics Class 9 NCERT Solution

Class 9 - Geometry - Number System - Algebra Practice Questions

Quadrilaterals Class 9 NCERT CBSE Solutions

Triangles Class 9 NCERT CBSE Solutions

Surface Areas and Volumes Class 9

Heron's Formula Class 9 NCERT CBSE Solutions

Circle Class 9 NCERT CBSE Solutions

Areas of Parallelograms and Triangles Class 9

Lines and Angles Class 9

Linear Equations in Two Variables Class 9

Coordinate Geometry Class 9

Polynomials Class 9

Number Systems Class 9

Mathsphy provides unconventional and a better way of learning maths. It saves time and gives you ease of learning anytime anywhere at your convenience. It has more than 1000 videos for 9th , 10th and 11th grade students explaining topic concepts and then solving all the questions in a very professional language giving you the experience of personalized tutoring.

Class 9 I have: Number System, Polynomials, Coordinate Geometry, Linear Equations in Two Variable, Lines and Angles, Triangles, Quadrilaterals, Circle, Areas of Parallelograms and Triangles, Herons's Formula, Surface Areas and Volumes, Statistics and Probability.

Class 10 I have: Real Numbers, Polynomials, Quadratic Equations, Coordinate Geometry, Linear Equations in Two Variables, Triangles Similarity, Circle, Introduction to Trigonometry, Application of Trigonometry, Area related to circle, Surface Areas and Volumes, Statistics and Probability

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[shreyulimbu]

Thank you from nepal now l will go tommrow with my hw in school☺☺☺☺

[roswudpaints]

In a parallelogram opposite angles are equal so, starting me agr agr ham angle A=C kr ke bhi ho jata ye