Definition:Sides are line segments which when joined together, forms polygon.
In the following polygon (rectangle):
AB, BD, CD and DA all are line segments which are joined together and thereby formed a Polygon ABDC.
Hence, AB, BD, CD and DA all are Sides of Polygon ABDC.
Let study following polygons also and try to find out names all its sides:
Polygon 1:
In the above polygon, PQ, QR, RS, SP are the sides of polygon PQRS.
Polygon 2:
In the above polygon, AB, BC, CD, DE, EF, FA are the sides of polygon PQRS.

