Elements of Geometry, Briefly, Yet Plainly Demonstrated by Edmund StoneD. Midwinter, 1728 |
From inside the book
Results 1-5 of 17
Page 108
... Ratio ; as in the Ratio of 6 to 4 , the Antecedent is 6 , and Confequent 4 . The Quantity of every Ratio is found , by dividing the Antecedent by the Confequent , as the Ratio of 12 to 5 is exprefs'd by ; alfo the Quantity of the Ratio ...
... Ratio ; as in the Ratio of 6 to 4 , the Antecedent is 6 , and Confequent 4 . The Quantity of every Ratio is found , by dividing the Antecedent by the Confequent , as the Ratio of 12 to 5 is exprefs'd by ; alfo the Quantity of the Ratio ...
Page 109
... Ratios are denoted thusor , or CD ; that is , the Ratio of A to B is greater than the Ratio of C to D , or equal to it , or elfe lefs . And this I would have well ob- ferv'd by every one that defigns to read what follows . IV ...
... Ratios are denoted thusor , or CD ; that is , the Ratio of A to B is greater than the Ratio of C to D , or equal to it , or elfe lefs . And this I would have well ob- ferv'd by every one that defigns to read what follows . IV ...
Page 110
... Ratio to what it has to the fecond B ; and when four Magnitudes A , B , C , D , are proportional , the firft A fhall have a triplicate Ratio to the fourth D of what it has to the fe- cond B ; and fo always one more in order , ac ...
... Ratio to what it has to the fecond B ; and when four Magnitudes A , B , C , D , are proportional , the firft A fhall have a triplicate Ratio to the fourth D of what it has to the fe- cond B ; and fo always one more in order , ac ...
Page 111
... Ratio , is when the Confequent is taken as the Antecedent , and fo compar'd with the Antecedent as Confequent . As A : B :: C : D. Therefore Inverfely B : A :: D : C. by Cor . 4 : 5 . XIV . Compounded Ratio , is when the An- tecedent ...
... Ratio , is when the Confequent is taken as the Antecedent , and fo compar'd with the Antecedent as Confequent . As A : B :: C : D. Therefore Inverfely B : A :: D : C. by Cor . 4 : 5 . XIV . Compounded Ratio , is when the An- tecedent ...
Page 115
... Ratio be demonftrated . For because A : B :: C : D , if E be = , = , , or Hyp than G , in like manner fhall F be , a 6 def . 91 than H. Therefore it is manifeft that if G be ,, or than E ; H fhall be I 2 a 6 def . 5. or = Q E. D. Book V ...
... Ratio be demonftrated . For because A : B :: C : D , if E be = , = , , or Hyp than G , in like manner fhall F be , a 6 def . 91 than H. Therefore it is manifeft that if G be ,, or than E ; H fhall be I 2 a 6 def . 5. or = Q E. D. Book V ...
Common terms and phrases
9 ax ABCD abfurd alfo alſo Altitude Angle ABC Bafe BC Baſe becauſe bifect Center Circ Cone confequently conft COROL Cylinder defcribed demonftrated Diameter draw the right drawn EFGH equal Angles equiangular equilateral Equimultiples EUCLID's ELEMENTS faid fame Multiple fecond fhall fimilar fince firft folid fome fore four right ftanding given right Line gles Gnomon greater Hence infcribe leffer lefs likewife Line CD Magnitudes manifeft manner Number oppofite Paral parallel Parallelepip Parallelepipedons Parallelogram perpend perpendicular poffible Point Polyhedron Prifms Probl PROP Propofition Pyramids Ratio Rectangle right Angles right Line AB right Line AC right-lined Figure SCHOL SCHOLIU Segment ſhall Side BC Sphere Square thefe thofe thro tiple Triangle ABC Whence whofe whole
Popular passages
Page 31 - 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 145 - Equal triangles which have one angle of the one equal to one angle of the other, have their sides about the equal angles reciprocally proportional : And triangles which have one angle in the one equal to one angle in the other, and their sides about the equal angles reciprocally proportional, are equal to one another.
Page 33 - ABD, is equal* to two right angles, «13. 1. therefore all the interior, together with all the exterior angles of the figure, are equal to twice as many right angles as there are sides of the figure; that is, by the foregoing corollary, they are equal to all the interior angles of the figure, together with four right angles; therefore all the exterior angles are equal to four right angles.
Page 27 - If two right-angled triangles have their hypotenuses equal, and one side of the one equal to one side of the other, the triangles are congruent.
Page 31 - The three angles of any triangle taken together are equal to the three angles of any other triangle taken together. From whence it follows, 2.
Page 11 - That a straight line may be drawn from any point to any other point. 2. That a straight line may be produced to any length in a straight line.