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Interactive video lesson plan for: Mid-point theorem | Parallelogram Theorem:Proving Quadrilateral is a Rhombus

Activity overview:

Parallelogram Theorem:Proving Quadrilateral is a Rhombus
http://www.learncbse.in/ncert-solutions-for-class-9-maths/

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 q3 ABCD is a rectangle and P, Q, R and S are mid-points of the sides AB, BC, CD and DA respectively. Show that the quadrilateral PQRS is a rhombus.
00:49 Proof
01:03 Consider two triangles and apply mid point theorem.Mid point theorem states that the line segment joining the mid-points of two sides of a triangle is parallel to the third side
01:57 apply mid point theorem.Mid point theorem states that the line segment joining the mid-points of two sides of a triangle is parallel to the third side.
02:33 Use property of parallelgram : Opposite angels are equal & Opposite sides are equal.

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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

Tagged under: GyanPub,ncert solutions,Free Online Maths Class,Maths,Free ncert solutions,NCERT solutions CBSE class 9 maths Quadrilaterals,Proving Quadrilaterals Parallelograms,Proving Quadrilateral Parallelogram (Lesson),Proving Quadrilateral Parallelogram,Triangle Intercept theorem,information mid point theorem

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