1183. A triangular distribution

    A triangular distribution is a continuous probability distribution whose density function graph forms a triangle with the abscissa axis...

    Dear Teacher:
    The distribution mean is the abscissa of the triangle barycenter.
    The distribution mode is the abscissa of the triangle orthocenter.
    The distribution midrang is the abscissa of the triangle circumcenter.

    Pepe Chapuzas is right, of course...