Sammendrag
There is hardly anyone, who knows anything about Plato and his philosophy, who would claim that Plato did not think that geometry is beautiful. Therefore, I focus primarily on two questions. The first question is why Plato thinks that geometry is beautiful and the second question is how much both practical and theoretical geometries are beautiful according to him. As for the former, I claim that since geometry is a constitutive part of ethical education, it is thus substantially beautiful. As for the latter, I connect the Ladder of Love and the Cave, and I argue that theoretical geometry is as beautiful as the Love for knowledge and that practical geometry is as beautiful as the Love for laws and institutions.