Comma for either/or — dharma, courage. Spelling forgiving — corage finds courage.

    The Atlas·Figures

    Euclid

    historical figure · 2 works · 2 mentions · 2 anchored passages · author page · cited 398 times in 2 works

    Eucl. XIII · Euclid's Book XIII · Uqlīdis · اقليدس

    in the texts

    ElementsHellenistic · Greek

    Author of the Elements, whose Book XIII on the regular solids is the subject of this commentary and of the propositions that follow.

    201-2) that this proof depends on eight theorems, six of which appear in Euclid's Book XIII.
    book 13
    The fact that Theaetetus wrote upon the regular solids agrees very well with the evidence which we possess of his contributions to the theory of irrationals, the connexion between which and the investigation of the regular solids is seen in Euclid's Book XIII.
    book 13
    , and his work on the regular solids was soon followed by another, that of Aristaeus, an elder contemporary of Euclid, who also wrote an important book on Solid Loci, i.
    book 13

    Kitāb mīzān al-ḥaqq fī al-manṭiq20th Century · Arabic

    Greek geometer whose book on geometry is said to have prompted Aristotle to compose and arrange the science of logic

    and that he was awakened to its composition and its arrangement by his study of the book of Uqlīdis on geometry.
    introduction · printed page 13