Prove that any four vertices of regular pentagon are concyclic .

Prove that any four vertices of a regular pentagon are concyclic.

Prove that any four vertices of a regular pentagon are concyclic.

Prove that any four vertices of a regular pantagon are concyclic.

Prove that the any four vertices of a regular pentagon are concyclic (lie on the same circle).

Show that any four vertices of a regular pentagon form a cyclic quadrilateral.

Prove that the quadrilateral obtained by joining any two alternate vertices of a regular pentagon is cyclic.

Symmetry of a regular pentagon.

Four particles each having a charge q, are placed on the four vertices of a regular pentagon. The distance of each corner from the centre is a. Find the electric field at the centre of the pentagon.

Four particles each having a charge q, are placed on the four vertices of a regular pentagon. The distance of each corner from the centre is a. Find the electric field at the centre of the pentagon.

Four particles each having a charge q are placed on the four vertices of a regular pentagon. The distance of each comer from !be centre is 'a'. Find the electric field at the centre of pentagon.