### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 GEOMETRY 9 Measurement of Angles 15 PLANE GEOMETRY 21 Parallel Lines 27 Triangles 38 Quadrilaterals 60 Polygons 68 Summary 74
 Measurement 98 Summary 122 BOOK IV 147 Summary 167 Summary 202 BOOK VI 213 Maxima and Minima 230 Summary 237

 Circles 83

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 67 - The line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of the third side.
сЕКъДА 105 - 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 46 - Any exterior angle of a triangle is equal to the sum of the two opposite interior angles.
сЕКъДА 74 - If two parallel lines are cut by a third straight line, the sum of the two interior angles on the same side of the transversal is equal to two right angles, (p.
сЕКъДА 64 - From 56 and 57 the pupils should learn that two triangles are equal in every respect (a) when two sides and the included angle of one are equal to two sides and the included angle of the other...
сЕКъДА 53 - If two angles of a triangle are unequal, the sides opposite are unequal, and the greater side is opposite the greater angle.
сЕКъДА 61 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
сЕКъДА 126 - DE and on the same side of it ; but equal triangles on the same base, and on the same side of it, are between the same parallels ; [I.
сЕКъДА 90 - Theorem. In the same circle, or in equal circles, equal chords are equally distant from the center; conversely, chords equally distant from the center are equal.
сЕКъДА 149 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.