# Elements of Geometry: Containing the First Six Books of Euclid, with a Supplement on the Quadrature of the Circle, and the Geometry of Solids : to which are Added, Elements of Plane and Spherical Trigonometry

W. E. Dean, 1842 - 317 СЕКъДЕР

### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 еМЭТГТА 1 3 еМЭТГТА 2 5 еМЭТГТА 3 48 еМЭТГТА 4 61 еМЭТГТА 5 91 еМЭТГТА 6 106 еМЭТГТА 7 121 еМЭТГТА 8 163
 еМЭТГТА 10 195 еМЭТГТА 11 217 еМЭТГТА 12 273 еМЭТГТА 13 277 еМЭТГТА 14 279 еМЭТГТА 15 306 еМЭТГТА 16 316 еМЭТГТА 17

 еМЭТГТА 9 181

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 51 - If a straight line be divided into two equal parts, and also into two unequal parts; the rectangle contained by the unequal parts, together with the square of the line between the points of section, is equal to the square of half the line.
сЕКъДА 149 - IF an angle of a triangle be bisected by a straight line, which likewise cuts the base ; the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of...
сЕКъДА 12 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line.
сЕКъДА 9 - 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 52 - If a straight line be bisected, and produced to any point, the rectangle contained by the whole line thus produced, and the part of it produced, together with the square on half the line bisected, is equal to the square on the straight line which is made up of the half and the part produced.
сЕКъДА 80 - 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 296 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
сЕКъДА 50 - If a straight line be divided into any two parts, the rectangle contained by the whole and one of the parts, is equal to the rectangle contained by the two parts, together with the square of the aforesaid part.
сЕКъДА 15 - UPON the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity.
сЕКъДА 81 - If a straight line touch a circle, and from the point of contact a straight line be drawn cutting the circle, the angles made by...