## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh and Twelfth |

### From inside the book

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Page 214

I. A

I. A

**solid**is that which hath length , breadth , and thickness . II . That which bounds a**solid**is a superficies . a III . A straight line is perpendicular , or at right angles , to a plane , when it makes right angles with every ... Page 215

A

A

**solid**angle is that which is made by the meeting of more than two plane angles , which are not in the same plane , in one point . X. « The tenth definition is omitted for reasons given in the notes . See Octavo Edition , XI . Page 216

A pyramid is a

A pyramid is a

**solid**figure contained by planes that are constituted betwixt one plane and one point above it in which they meet . XIII . A prism is a**solid**figure contained by planc figures , of which two that are opposite are equal ... Page 217

A cylinder is a

A cylinder is a

**solid**figure described by the revolution of a right - angled parallelogram about one of its sides which remains fixed . a XXII . The axis of a cylinder is the fixed straight line about which the parallelogram revolves . Page 218

A dodecahedron is a

A dodecahedron is a

**solid**figure contained by twelve equal pentagons which are equilateral and equiangular . XXIX . An icosahedron is a**solid**figure contained by twenty equal and equilateral triangles . Def .### What people are saying - Write a review

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### Other editions - View all

The Elements of Euclid: Viz. The First Six Books, Together With the Eleventh ... Euclid Euclid No preview available - 2018 |

### Common terms and phrases

altitude angle ABC angle BAC base base BC BC is equal centre circle ABCD circumference common cone Const contained cylinder demonstrated described diameter divided double draw drawn equal angles equiangular equilateral equimultiples extremities fall figure fore four fourth given given straight line greater half inscribed join less Let ABC likewise magnitudes manner meet multiple opposite parallel parallelogram pass perpendicular plane polygon prism PROB produced PROP proportionals proved pyramid ratio reason rectangle contained rectilineal figure remaining angle right angles segment shown sides similar solid solid angle solid parallelopiped sphere square taken THEOR third touches triangle ABC vertex wherefore whole