# 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

J.P. Lippincott & Company, 1855 - 318 уелЯдет
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### Ресйечьменб

 Еньфзфб 1 2 Еньфзфб 2 3 Еньфзфб 3 5 Еньфзфб 4 48 Еньфзфб 5 91 Еньфзфб 6 106 Еньфзфб 7 121 Еньфзфб 8 130
 Еньфзфб 11 195 Еньфзфб 12 217 Еньфзфб 13 240 Еньфзфб 14 264 Еньфзфб 15 273 Еньфзфб 16 279 Еньфзфб 17 306 Еньфзфб 18 316

 Еньфзфб 9 163 Еньфзфб 10 181
 Еньфзфб 19

### ДзмпцйлЮ брпурЬумбфб

УелЯдб 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.
УелЯдб 29 - Straight lines which are parallel to the same straight line are parallel to one another. Triangles and Rectilinear Figures. The sum of the angles of a triangle is equal to two right angles.
УелЯдб 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.
УелЯдб 11 - Let it be granted that a straight line may be drawn from any one point to any other point. 2. That a terminated straight line may be produced to any length in a straight line. 3. And that a circle may be described from any centre, at any distance from that centre.
УелЯдб 72 - 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.
УелЯдб 84 - If from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.
УелЯдб 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.
УелЯдб 22 - Any two sides of a triangle are together greater than the third side.
УелЯдб 53 - If a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.
УелЯдб 35 - Parallelograms upon the same base and between the same parallels, are equal to one another.