### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 еМЭТГТА 1 1 еМЭТГТА 2 10 еМЭТГТА 3 71 еМЭТГТА 4 79 еМЭТГТА 5 81 еМЭТГТА 6 90 еМЭТГТА 7 117 еМЭТГТА 8 133
 еМЭТГТА 9 137 еМЭТГТА 10 141 еМЭТГТА 11 172 еМЭТГТА 12 195 еМЭТГТА 13 197 еМЭТГТА 14 243 еМЭТГТА 15 281 еМЭТГТА 16 286

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 37 - The sum of all the angles of a polygon is equal to twice as many right angles as the polygon has sides, less two.
сЕКъДА 180 - THEOREM. If one of two parallel lines is perpendicular to a plane, the other will also be perpendicular to this plane. Let AP & ED be parallel lines, of which AP is perpendicular to the plane MN ; then will ED be also perpendicular to this plane.
сЕКъДА 139 - PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle : it is required to inscribe a circle in the triangle ABC.
сЕКъДА 224 - The radius of a sphere is a straight line, drawn from the centre to any point of the...
сЕКъДА 43 - In a right-angled triangle, the side opposite the right angle is" called the Hypothenuse ; and the other two sides are cal4ed the Legs, and sometimes the Base and Perpendicular.
сЕКъДА 184 - THEOREM. If two angles, not situated in the same plane, have their sides parallel and lying in the same direction, they will be equal, and the planes in which they are situated will be parallel.
сЕКъДА 10 - 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.
сЕКъДА 226 - We conclude then, that the solidity of a cylinder is equal to the product of its base by its altitude.
сЕКъДА 22 - If two sides and the included angle of the one are respectively equal to two sides and the included angle of the other...
сЕКъДА 12 - If equals be added to unequals, the wholes are unequal. V. If equals be taken from unequals, the remainders are unequal. VI. Things which are double of the same, are equal to one another.