# Elements of Geometry: Containing the First Six Books of Euclid: With a Supplement on the Quadrature of the Circle and the Geometry of Solids ...

J. Eastburn & Company, 1819 - 317 من الصفحات

### ما يقوله الناس -كتابة مراجعة

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### المحتويات

 القسم 1 ii القسم 2 iii القسم 3 17 القسم 4 19 القسم 5 27 القسم 6 53 القسم 7 66 القسم 8 93
 القسم 15 167 القسم 16 180 القسم 17 192 القسم 18 209 القسم 19 215 القسم 20 229 القسم 21 265 القسم 22 283

 القسم 9 124 القسم 10 139 القسم 11 152 القسم 12 153 القسم 13 158 القسم 14 163
 القسم 23 304 القسم 24 320 القسم 25 330 القسم 26 331 القسم 27

### مقاطع مشهورة

الصفحة 151 - If from the vertical angle of a triangle a straight line be drawn perpendicular to the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the perpendicular and the diameter of the circle...
الصفحة 17 - 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.
الصفحة 31 - THE greater angle of every triangle is subtended by the greater side, or has the greater side opposite to it.
الصفحة 292 - If a straight line meet two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
الصفحة 306 - 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.
الصفحة 34 - IF two triangles have two sides of the one equal to two sides of the other, each to each, but the angle contained by the two sides of one of them greater than the angle contained by the two sides equal to them, of the other ; the base of that which has the greater angle shall be greater than the base of the other.
الصفحة xvi - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
الصفحة 76 - To draw a straight line from a given point, either without or in the circumference, which shall touch a given circle. First, let A be a given point without the given circle BCD : it is required to draw a straight line from A which shall touch the circle.
الصفحة 75 - THE straight line drawn at right angles to the diameter of a circle, from the extremity of it, falls without the circle...
الصفحة 37 - If a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite upon the same side ; and likewise the too interior angles upon the same side together equal to two right angles.