## Geometry, Plane, Solid, and Spherical, in Six Books: To which is Added, in an Appendix, the Theory of Projection |

### Other editions - View all

Geometry, Plane, Solid, and Spherical, in Six Books: To Which Is Added, in ... Pierce Morton No preview available - 2013 |

Geometry, Plane, Solid, and Spherical, in Six Books: To Which Is Added, in ... Pierce Morton No preview available - 2015 |

### Common terms and phrases

A B C altitude axes axis base bisected called centre chord circle circumference circumscribed coincide common cone contained conversely convex surface curve cylinder demonstration describe diameter difference distance divided draw drawn edges ellipse equal equation evident faces figure four fourth Geometry given given point greater greatest half hence hyperbola inscribed join less likewise locus magnitudes manner mean measure meet opposite original parallel parallelogram parallelopiped pass perimeter perpendicular plane polygon prism produced projection PROP proportionals proposition pyramid radius ratio rectangle rectilineal regular remainder respectively right angles segment shown sides similar solid sphere spherical square straight line surface taken tangent third tion touch triangle values vertex vertical whole

### Popular passages

Page 196 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.

Page 64 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.

Page 20 - In every triangle, the square of the side subtending any of the acute angles, is less than the squares of the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall upon it from the opposite angle, and the acute angle. Let ABC be any triangle, and the angle at B one of its acute angles ; and upon BC, one of the sides containing it, let fall the perpendicular...

Page 10 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.

Page 189 - ... shall be greater than the base of the other. Let ABC, DEF be two triangles, which have the two sides AB, AC, equal to the two DE, DF, each to each, viz.

Page 1 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.

Page 84 - The angle at the centre of a circle is double of the angle at the circumference, upon the same base, that is, upon the same part of the circumference.

Page 78 - If a straight line touch a circle, and from the point of contact a straight line be drawn cutting the circle ; the angles which this line makes with the line touching the circle, shall be equal to the angles which are in the alternate segments of the circle.

Page 79 - EQUAL straight lines in a circle are equally distant from the centre ; and those which are equally distant from the centre, are equal to one another.

Page 264 - IF two straight lines cut one another, the vertical, or opposite, angles shall be equal.