Parallelogram Theorem 1:Diagonals of a parallelogram are equal then it is a rectangle.Proving a parallelogram is a rectangle.

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

In this video we will learn how a parallelogran is a rectangle, provided diagonals of a parallelgram are equal.

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

00:02 CBSE class 9 maths NCERT Solutions chapter 10 Quadrilaterals q2 If the diagonals of a parallelogram are equal, then show that it is a rectangle.

00:54 Proof , consider two triangles for similarity test.

01:51 Apply SSS congruency Rule

03:10 Apply properties of parallel lines.Co interior angles are supplementry.

04:24 In Rectangle, Each pair of opposite sides are equal. Each angle is a right angle.

Follow us on Google Plus:

https://plus.google.com/+phanicbse

Like us on Facebook:

https://www.facebook.com/ncertsolutionsbooks

Follow us on twitter

https://www.twitter.com/gyanpub

learncbse.in

CBSE solutions for class 9 maths Quadrilaterals

CBSE class 9 maths chapter 10 Quadrilaterals

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.

Tagged under: GyanPub,ncert solutions,Free Online Maths Class,Maths,Free ncert solutions,Proving parallelogram rectangle.,characteristics parallelogram,parallelogram properties geometry,parallelogram properties application solve problems,CBSE solutions class 9 maths Quadrilaterals,Solutions CBSE Class 9 Maths Chapter 10,NCERT solutions CBSE class 9 maths Quadrilaterals

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.

Quickfire

Carry out a quickfire formative assessment to see what the whole class is thinking

Discuss

Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices

Clip

Turn any public video into a live chat with questions and quizzes

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!

Dr Ayla Göl
@iladylayla

A good tool for supporting active #learning.

The Team Up app is unlike anything I have ever seen. You left NOTHING out! So impressed!