Genre:

Illustration, Drollery

Relevant illustrations:

wdct.

Subjects:

Education, Mathematics

People mentioned:

Euclid

    Shows an elderly master of arts sitting before a blackboard on which a triangle has been drawn. He asks his pupil, who stares at the geometrical figure, what will happen if all the sides of the triangle are equal. His pupil replies confidently: 'I should say the fourth would be equal too'.