## The First Book of Euclid's Elements: With a Commentary Based Principally Upon that of Proclus Diadochus |

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The First Book of Euclid's Elements: With a Commentary Based Principally ... Proclus,Euclid No preview available - 2015 |

### Common terms and phrases

ABC is equal ABCD adjacent angles alternate angles Anaritius angle ACD angle BAC angles ABC angles equal Axioms base BC bisected centre circle constructed definition demonstration distance drawn eBei Elementist elliptic hypothesis enunciation equal angles equal in area equal straight lines equal to BC equidistant equilateral Euclid Euclid's Theorem Euclidean Geometry fifth Postulate finite given rectilinear angle given straight line homogeneous space hyperbolic geometry hyperbolic hypothesis infinite inner and opposite inner angles intersect joined Lemma length less Let ABC limited straight line magnitude method non-secant obtuse Oirep opposite angles outer angle parabolic geometry parabolic hypothesis parallelogram plane polygon present Theorem principles Proclus produced proof Prop Proposition proved Ptolemy rectilinear figure remaining angles right angles right gram side equal square straight angle straight line BC straight line falling surface triangle ABC triangle DEF