Class 10 Ex 6.6 Q6 Maths (Triangles), Ncert, Prove that the sum of the squares of the diagonals of

Prove that the sum of the squares of the diagonals of parallelogram is equal to the sum of the squares of its sides. Maths Class 10 Chapter- 6, Triangles Exercise-6.6, Q.No.-6 Extra Question Extra Question from Rd Sharma ????Dear Student