An Elementary Treatise on the Geometrical and Algebraical Investigation of Maxima and Minima: Being the Substance of a Course of Lectures Delivered Conformably to the Will of Lady Sadler : to which is Added A Selection of Propositions Deducible from Euclid's Elements |
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Page 12
... same side of it , and the one figure fall within the other , that which has the greater surface shall have the greater perimeter . PROP . XXVI . ( XIV . ) If two right - angled triangles have the three angles of the one equal to the ...
... same side of it , and the one figure fall within the other , that which has the greater surface shall have the greater perimeter . PROP . XXVI . ( XIV . ) If two right - angled triangles have the three angles of the one equal to the ...
Page 25
... Equal triangles , which have their bases in the same straight line and which are between the same parallels , stand ... perimeter of a given triangle . ( LXIV . ) The two triangles formed by drawing straight lines , from any point within ...
... Equal triangles , which have their bases in the same straight line and which are between the same parallels , stand ... perimeter of a given triangle . ( LXIV . ) The two triangles formed by drawing straight lines , from any point within ...
Page 53
... perimeter and the three angles of a triangle being given , to construct the triangle . ( LVIII . ) From two given points , in the circumference of a circle , to draw two equal ... equal to a given rectilineal angle . PROP . XXXV . ( LIX . ) ...
... perimeter and the three angles of a triangle being given , to construct the triangle . ( LVIII . ) From two given points , in the circumference of a circle , to draw two equal ... equal to a given rectilineal angle . PROP . XXXV . ( LIX . ) ...
Page 62
... equal to one another . ( LXXX . ) The perimeter , the vertical angle , and the alti- tude of a triangle being given , to construct the triangle . ( LXXXI . ) If from the intersection of any two tangents to a circle , any straight line ...
... equal to one another . ( LXXX . ) The perimeter , the vertical angle , and the alti- tude of a triangle being given , to construct the triangle . ( LXXXI . ) If from the intersection of any two tangents to a circle , any straight line ...
Page 96
... equal to the greater segment , be added to the given line , the line which is made up of the given ... perimeter being given of a right - angled triangle , having its three sides ... equal to the side of an equilateral and ( 96 ) APPENDIX I.
... equal to the greater segment , be added to the given line , the line which is made up of the given ... perimeter being given of a right - angled triangle , having its three sides ... equal to the side of an equilateral and ( 96 ) APPENDIX I.
Other editions - View all
An Elementary Treatise on the Geometrical and Algebraical Investigation of ... Daniel Cresswell No preview available - 2016 |
An Elementary Treatise on the Geometrical and Algebraical Investigation of ... D. Cresswell No preview available - 2015 |
An Elementary Treatise on the Geometrical and Algebraical Investigation of ... D 1776-1844 Cresswell No preview available - 2015 |
Common terms and phrases
ABCD aggregate Algebra altitude angle equal apparent magnitude base Binomial Theorem bisected chord circumference coefficients Cx² derivative describe a circle diameter divided double draw a straight equal perimeter equation equilateral triangle Euclid Euclid's Elements find a point finite straight line function Geometry given angle given circle given finite straight given point given ratio given straight line given triangle greater ratio greatest hypotenuse inscribed isosceles triangle less Let ABC lines be drawn magnitudes MAXIMA AND MINIMA maximum minimum number of sides parallel parallelepiped parallelogram plane prism produced PROP proposition quadrilateral rectilineal figure rectangle contained regular polygon rhomb right angles right-angled triangle scalene triangle SCHOLIUM sector segment shewn square straight line drawn straight line joining subtended tangent Theorem trapezium triangle ABC variable quantity velocity vertex vertical angle wherefore
Popular passages
Page 81 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Page 83 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. D c A' D' Hyp. In triangles ABC and A'B'C', ZA = ZA'. To prove AABC = ABxAC. A A'B'C' A'B'xA'C' Proof. Draw the altitudes BD and B'D'.
Page 56 - 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...
Page 36 - In every triangle, the square of the side subtending any of the acute angles is less than the squares of the sides containing that angle by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall upon it from the opposite angle, and the acute angle. Let ABC be any triangle, and the angle at B one of its acute angles, and upon BC, one of the sides containing it, let fall the perpendicular...
Page 32 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Page 85 - Divide a straight line into two parts such that the rectangle contained by the whole line and one of the parts shall be equal to the square on the other part.
Page 12 - If two triangles have the three angles of one equal to the three angles of the other, each to each, do you think the two triangles are necessarily alike in every respect ? 5.
Page 16 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Page 154 - 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 part, is equal to the square of the straight line which is made up of the whole and that part.
Page 22 - If from the right angle of a right-angled triangle, two straight lines be drawn, one perpendicular to the base, and the other bisecting it, they will contain an angle equal to the difference of the two acute angles of the triangle.