### Фй лЭне пй чсЮуфет -Уэнфбоз ксйфйкЮт

Ден енфпрЯубме ксйфйкЭт уфйт ухнЮиейт фпрпиеуЯет.

### Ресйечьменб

 PLANE GEOMETRY 9 Gezeral Princip 35 BOOK III 44 BOOK IV 57 Problems relating to the preceding Rooks 32 93 SOLID GEOMETRY 112
 Polyedrons 127 BOOK IX 148 The Three round Podies 164 CONIC SECTIONS 177 Ellipse 188 Hyperbola 205

### ДзмпцйлЮ брпурЬумбфб

УелЯдб 20 - The circumference of every circle is supposed to' be divided into 360 equal parts, called degrees ; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated by the characters °, ', ". Thus 23° 14' 35" is read 23 degrees, 14 minutes, and 35 seconds.
УелЯдб 148 - The radius of a sphere, is a straight line drawn from the center to any point of the surface.
УелЯдб 18 - BC common to the two triangles, which is adjacent to their equal angles ; therefore their other sides shall be equal, each to each, and the third angle of the one to the third angle of the other, (26.
УелЯдб 34 - ... therefore the angle ACB is equal to the angle CBD. And because the straight line BC meets the two straight lines AC, BD, and makes the alternate angles ACB, CBD equal to one another, AC is parallel to BD.
УелЯдб 32 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
УелЯдб 159 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.
УелЯдб 44 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
УелЯдб 30 - 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.
УелЯдб 29 - If a straight line is perpendicular to one of two parallel lines, it is perpendicular to the other also.
УелЯдб 151 - But when a solid angle is formed by three plane angles, the sum of any two of them is greater than the third (Prop.