Roman Tucson order is a variation of which Greek order?

Etruscan order

Explanation:

The tuscan order (Latin Latin Ordo Tuscanicus or Ordo Tuscanus, with the meaning of Etruscan order) is one of the classical orders developed by the Romans, the other being the composite orders.!

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.