Yes.
left brain
The mutual obligation between peasants and lords in feudal society was characterized by a system of reciprocal duties. Peasants, or serfs, were required to work the land owned by the lords, providing agricultural produce and labor in exchange for protection and the right to cultivate certain plots for their own sustenance. In return, lords were obligated to offer military protection, justice, and the maintenance of order within their domain. This relationship was fundamental to the stability and functioning of feudal society.
A mandatory relationship is when you HAVE to do it. Kind of like when people are "arranged". An optional relationship is where you have the right to chose.
Pythagorus
right
The hypotenuse is the side opposite to the right angle in the triangle.
In most countries only the citizens have the right to vote, foreigners are excluded.
Every right to be beautiful inside. Every right to tell you how gorgeous you are. Every right to listen to you. The right to love, the right to be good kissers, the right to RESPECT YOUR MORALS.
Ask a philosopher - bottom line is that a legal duty is imposed by a government while moral duty is based upon one's own definition of what is right
In the right context, yes. We help one another, you respect one another, they support one another, etc.
Their are Perpendicular.
They total 90o