## Geometrical Problems Deducible from the First Six Books of Euclid, Arranged and Solved: To which is Added an Appendix Containing the Elements of Plane Trigonometry ... |

### Dentro del libro

Página xxvii

To divide a straight line into two parts such

To divide a straight line into two parts such

**that the rectangle contained by them may be equal to the square**of their difference . 7. If a straight line be divided into any two parts ; to produce it so that the rectangle contained by ... Página 155

To divide a straight line into two parts such ,

To divide a straight line into two parts such ,

**that the rectangle contained by them may be equal to the square**of their difference . Let AB be the given line ; upon it describe a semicircle ADB . From B draw BC at right angles and ...### Comentarios de la gente - Escribir un comentario

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### Términos y frases comunes

ABCD base centre chord circle circle ABC circles cut circumference common describe describe a circle determine diameter difference distance divided double draw draw any line equal equiangular Eucl extremities figure given angle given circle given in position given line given point given ratio greater half Hence inscribed intercepted Join Join AE less Let ABC let fall line joining lines be drawn lines drawn manner mean proportional meeting opposite sides parallel parallel to BC parallelogram pass pendicular perpendicular point of contact point of intersection produced quadrant radius right angles segments semicircle shewn sides similar square straight line tangent trapezium triangle triangle ABC whence

### Pasajes populares

Página 124 - If a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those sides produced, proportionally; and if the sides, or the sides produced, be cut proportionally, the straight '.line which joint the points of section, shall be parallel to the remaining side of the triangle.

Página xiii - 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.

Página 158 - Iff 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...

Página 160 - Upon a given straight line, to describe a segment of a circle, containing an angle equal to a given angle. Let AB be the given straight line, and C the given angle ; it is required to.

Página 230 - To describe an isosceles triangle, having each of the angles at the base double of the third angle.

Página 157 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.

Página 33 - FC ; (ax. 1.) and FA, FB, FC are equal to one another : wherefore the circle described from the centre F, at the distance of one of them, will pass through the extremities of the other two, and be described about the triangle ABC.

Página xxv - ... the squares of the diagonals, is equal to the sum of the squares of the bisected sides together with four times the square of the line joining those points of bisection.

Página 248 - If an equilateral triangle be inscribed in a circle, and the adjacent arcs cut off by two of its sides be bisected, the line joining the points of bisection shall be trisected by the sides.

Página 355 - The sine of an angle is equal to the sine of its supplement. The sine rule Consider fig.