### Фй лЭне пй чсЮуфет -Уэнфбоз ксйфйкЮт

Ден енфпрЯубме ксйфйкЭт уфйт ухнЮиейт фпрпиеуЯет.

### Ресйечьменб

 PRELIMINARY DEFINITIONS 1 Book 72 AREAS OF POLYGONS 162 REGULAR POLYGONS MEASUREMENT OF 188
 APPENDIX TO PLANE GEOMETRY 211 SOLID GEOMETRY 233 SPHERE 360

### ДзмпцйлЮ брпурЬумбфб

УелЯдб 371 - A zone is a portion of the surface of a sphere included between two parallel planes.
УелЯдб 49 - ... the three sides of one are equal, respectively, to the three sides of the other. 2. Two right triangles are congruent if...
УелЯдб 261 - The projection of a point on a plane is the foot of the perpendicular drawn from the point to the plane.
УелЯдб 336 - A spherical polygon is a portion of the surface of a sphere bounded by three or more arcs of great circles. The...
УелЯдб 73 - A chord is a straight line joining the extremities of an arc ; as AB.
УелЯдб 328 - A sphere is a solid bounded by a surface all points of which are equally distant from a point within called the centre.
УелЯдб 205 - S' denote the areas of two © whose radii are R and R', and diameters D and D', respectively. Then, | = "* § = ЈЈ = Ј• <§337> That is, the areas of two circles are to each other as the squares of their radii, or as the squares of their diameters.
УелЯдб 170 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles.
УелЯдб 224 - The perpendiculars from the vertices of a triangle to the opposite sides are the bisectors of the angles of the triangle formed by joining the feet of the perpendiculars.
УелЯдб 325 - A right circular cone may be generated by the revolution of a right triangle about one of its legs as an axis.