### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 T Square and DrawingBoard 115 Constructions Polygons 135 Proportional Compasses 147 Pantagraph 148 148 Architectural Mouldings 166 Ovals 175 Questions and Exercises E 185 GENERAL Principles of Measurement PAOB 193
 Questions and Exercises L 301 The Circular Protractor 307 The Opisometer 313 Exercises M 319 The Prism 326 The Sphere 334 Exercises N 342 Note on the Planimeter 357

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 32 - If a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.
сЕКъДА 19 - To draw a straight line at right angles to a given straight line, from a given point in the same.
сЕКъДА 27 - 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.
сЕКъДА 32 - If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it; the angle contained by these two sides is a right angle.
сЕКъДА 43 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
сЕКъДА 17 - 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.
сЕКъДА 22 - Theorem. The greater side of every triangle is opposite to the greater angle. Let ABC be a triangle of which the side AC is greater than the side AB ; the angle ABC is also greater than the angle BCA. Because AC is greater than AB, make...
сЕКъДА 192 - The circumference of every circle is supposed to be divided into 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, and these into thirds, fourths, &c.
сЕКъДА 126 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
сЕКъДА 20 - To draw a straight line perpendicular to a given straight line of an unlimited length, from a given point without it.