**'Circle Party'**, where they sing and perform their traditional **'Tagentia Dance'**.

In the **'Tangentia Dance'** , all the Circles arrange themselves in a circle and hold the largest possible number of different ribbons such that the ribbons are tangents to both of the Circles holding them.

If $20$ Circles are performing this year, how many ribbons are required for the **'Tangentia Dance'** ?

**Details and assumptions :**

- The question talks about the maximum number of tangents possible between all the circles.
- Every ribbon is connecting only $2$ Circles.