Angle sum property in a quadrilateral

http://www.learncbse.in/ncert-solutions-for-class-9-maths/

A quadrilateral has four sides, four angles and four vertices.

In this chapter, we will study more about different types of quadrilaterals, their properties and especially those of parallelograms.

In this video, we learn how to apply Congruency Rule to solve Problems on Qudrilaterals. Use parallel lines concept and triangle congruence theorems to prove/solve problems on properties of parallelograms.

Reference book for the above video is

National Council of Educational Research and Training (NCERT) Book for Class 9 Subject: Maths

This Video is also refers as CBSE Class 9 mathts NCERT Solutions Chapter 8 Quadrilaterals

00:02 CBSE class 9 maths NCERT Solutions chapter 8 Quadrilaterals q1 The angles of quadrilateral are in the ratio 3 : 5 : 9 : 13. Find all the angles of the quadrilateral.

00:59 Apply Angle Sum Property of a Quadrilateral: It states that Sum of the angles of a quadrilateral is 360°.

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CBSE solutions for class 9 maths Quadrilaterals

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CBSE class 9 maths NCERT Solutions chapter 10 Quadrilaterals

Solutions for CBSE Class 9 Maths Chapter 10

NCERT solutions for class 9 maths Quadrilaterals

NCERT solutions for CBSE class 9 maths Quadrilaterals

CBSE Class 9 maths solutions Quadrilaterals

Proving that a Quadrilateral is a Parallelogram (Lesson)

Proving a Quadrilateral a Parallelogram | Geometry Proof How To Help

Proving Quadrilaterals are Parallelograms

How to prove Quadrilaterals are Parallelograms using Properties of Parallelograms

Quadrilaterals Properties of Parallelograms

parallelogram and its properties application to solve problems

parallelogram properties geometry

parallelogram geometry

characteristics of a parallelogram

Proving a parallelogram is a rectangle.

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