The Elements of geometry [Euclid book 1-3] in general terms, with notes &c. &c. Also a variety of problems & theorems. [Ed. by J. Luby. With] The elements of plane geometry, comprising the definitions of the fifth book, and the sixth book in general terms, with notes [&c.] by J. Luby [described as] Pt. 31833 |
Inni boken
Resultat 1-5 av 100
Side 7
... draw lines to the extremities of the given one ; those three lines form an equilateral triangle . to For each of the drawn lines is equal to the given line , as being radii of the same circle , and they are .. each other . ( per ax . 1 ...
... draw lines to the extremities of the given one ; those three lines form an equilateral triangle . to For each of the drawn lines is equal to the given line , as being radii of the same circle , and they are .. each other . ( per ax . 1 ...
Side 8
... drawn . For it is to the produced part of the other leg ; since the whole produced legs are , and the parts of them ... lines a part equal to the less . From either extremity of the greater draw a line = to the less ( per Prop . 2 , ) and ...
... drawn . For it is to the produced part of the other leg ; since the whole produced legs are , and the parts of them ... lines a part equal to the less . From either extremity of the greater draw a line = to the less ( per Prop . 2 , ) and ...
Side 12
... drawn to the point of bisection , is perpendicular to the given line . This can be proved as the former ( per 8th ) ... lines stand on the same right line at the same point , they make angles , which taken to- gether are equal to two right ...
... drawn to the point of bisection , is perpendicular to the given line . This can be proved as the former ( per 8th ) ... lines stand on the same right line at the same point , they make angles , which taken to- gether are equal to two right ...
Side 15
... lines be drawn to the same right line , of which one is perpendicular to it and the other not , the perpendicular is ... lines drawn to any point within a triangle from the extremities of any side , are together less than the sum of the ...
... lines be drawn to the same right line , of which one is perpendicular to it and the other not , the perpendicular is ... lines drawn to any point within a triangle from the extremities of any side , are together less than the sum of the ...
Side 16
... lines , of which any two together are greater than the third , to construct a triangle , whose sides shall be respectively equal to the three given lines . From any point draw a right line to one of them ; and from the extremities of this , ...
... lines , of which any two together are greater than the third , to construct a triangle , whose sides shall be respectively equal to the three given lines . From any point draw a right line to one of them ; and from the extremities of this , ...
Andre utgaver - Vis alle
The Elements of geometry [Euclid book 1-3] in general terms, with notes &c ... Euclides Uten tilgangsbegrensning - 1821 |
Vanlige uttrykk og setninger
adjacent altitude ANALYSIS angle contained antecedent assumed bisecting line chord circumference circumscribing circle connecting line construct conterminous dedu diagonal diameter directum divided draw a right drawn line equal angles equiangular equilateral triangle evident external angle extremity given angle given circle given figure given in position given line given point given ratio given right line given triangle half the difference half the given hypotenuse inscribed intercept intersect isosceles triangle less lesser let fall line bisecting lines be drawn magnitude mean proportional meet opposite angle opposite side parallelogram pass perpendicular point of bisection point of contact polygons PROB PROP radii radius rect rectangle required triangle respectively right angled triangle secant segts semicircle side subtending similar square Suppose tangent THEOR triangle ABC vertex vertical angle whole line
Populære avsnitt
Side 100 - If a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.
Side 11 - THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal.
Side 130 - The angle at the centre of a circle is double the angle at the circumference on the same arc.
Side 135 - ... a circle. 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. The opposite angles of any quadrilateral inscribed in a circle are supplementary ; and the converse.
Side 32 - ... polygons are to each other in the duplicate ratio of their homologous sides.
Side 37 - In any right-angled triangle, the square which is described on the side subtending the right angle is equal to the sum of the squares described on the sides which contain the right angle.
Side 124 - If from a point within a circle more than two equal straight lines can be drawn to the circumference, that point is the centre of the circle.
Side 6 - Convertendo ; when it is concluded, that, if there be four magnitudes proportional, the first is to the sum or difference of the first and second, as the third is to the sum or difference of the third and fourth.
Side 10 - If two triangles have two sides of the one equal to two sides of the other, each to each, and" have likewise their bases equal ; the angle which is contained by the two sides of the one shall be equal to the angle contained by the two sides equal to them, of the other. Let ABC, DEF be two triangles, having the two sides AB, AC, equal to the two sides DE, DF, each to each, viz.
Side 118 - If any two points be taken in the circumference of a circle, the straight line which joins them shall fall within the circle.