## 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 ... |

### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Other editions - View all

### Common terms and phrases

ABCD base centre chord circles cut circumference construct the triangle cosecant cosine describe a circle diameter divided draw a line drawn parallel equiangular equilateral Eucl extremities given angle given circle given in position given line given point given ratio given square given straight line given triangle hypothenuse inscribed inscribed circle intercepted isosceles triangle Join AE Let AB Let ABC let fall line given line joining lines be drawn lines drawn mean proportional opposite side parallel to AC parallelogram pendicular perpendicular perpendicular drawn point of contact point of intersection points of bisection quadrant radius rectangle contained right angles right-angled triangle segments semicircle shewn sine square of AC tang tangent trapezium triangle ABC triangle required vertex vertical angle whence

### Popular passages

Page 12 - IF a straight line be divided into two equal, and also into two unequal parts ; the squares of the two unequal parts are together double of the square of half the line, and of the square of the line between the points of section.

Page xv - 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.

Page xxx - 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.

Page 315 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.

Page 144 - 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...

Page 341 - CE is equal to the difference of the segments of the base made by the perpendicular.

Page 111 - If from a point, without a parallelogram, there be drawn two straight lines to the extremities of the two opposite sides, between which, when produced, the point does not lie, the difference of the triangles thus formed is equal to half the parallelogram. Ex. 2. The two triangles, formed by drawing straight lines from any point within a parallelogram to the extremities of its opposite sides, are together half of the parallelogram.

Page 176 - PROPOSITION I. PROBLEM. — To describe an equilateral triangle upon a given finite straight line. Let AB be the given straight line; it is required to describe an equilateral triangle upon it.

Page 293 - Given the vertical angle, the difference of the two sides containing it, and the difference of the segments of the base made by a perpendicular from the vertex ; construct the triangle.

Page 282 - AB describe a segment of a circle containing an angle equal to the given angle, (in.