### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 GEOMETRY 1 LINES AND PLANES IN SPACE 8 TABLE OF FORMULAS 112 RECTILINEAR FIGURES 208 EXERCISES 234 DEFINITIONS 251 DIHEDRAL ANGLES 269 THE PLANE ANGLE 270
 EXTENSION OF THE MEANING OF ANGLES 288 POLYHEDRONS CYLINDERS AND CONES 289 307 330 EXERCISES 342 THE PRISMATOID FORMULA 354 THE SPHERE 360 SYMMETRY 405 пМЕУЛАТИЙэ ДИЙАИЧЛАТА

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 94 - Any two sides of a triangle are together greater than the third side.
сЕКъДА 274 - If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane.
сЕКъДА 50 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
сЕКъДА 42 - If two triangles have two sides of the one equal, respectively, to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second.
сЕКъДА 360 - A sphere is a solid bounded by a surface all points of which are equally distant from a point within called the centre.
сЕКъДА 89 - The tangents to a circle drawn from an external point are equal, and make equal angles with the line joining the point to the centre.
сЕКъДА 156 - In a series of equal ratios, the sum of the antecedents is to the sum of the consequents as any antecedent is to its consequent.
сЕКъДА 41 - If two angles of a triangle are unequal, the sides opposite are unequal, and the greater side is opposite the greater angle.
сЕКъДА 191 - 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.
сЕКъДА 166 - If two chords intersect in a circle, the product of the segments of one is equal to the product of the segments of the other.