Elements of Geometry, Containing the First Six Books of Euclid, with a Supplement on the Quadrature of the Circle, and the Geometry of Solids: To which are Added, Elements of Plane and Spherical TrignonometryBell & Bradfute, 1875 - 257 pagine |
Dall'interno del libro
Risultati 1-5 di 89
Pagina 2
... angle at a point , it may be expressed by a letter placed at that point ; as the angle at E. VII . When a straight line standing on another straight line makes the adjacent angles equal to one another , each of the angles is called a right ...
... angle at a point , it may be expressed by a letter placed at that point ; as the angle at E. VII . When a straight line standing on another straight line makes the adjacent angles equal to one another , each of the angles is called a right ...
Pagina 3
... right angle . XXIII . An obtuse - an- gled trian- gle is that which has an obtuse angle . XIV . An acute - angled triangle is that which has three acute / angles ... angles right angles . XXVI . An oblong is that which has all its angles ...
... right angle . XXIII . An obtuse - an- gled trian- gle is that which has an obtuse angle . XIV . An acute - angled triangle is that which has three acute / angles ... angles right angles . XXVI . An oblong is that which has all its angles ...
Pagina 9
... angles . Let BAC be the given rectilineal angle , it is required to bisect it . Take any point D in AB , and from AC ... right angles to a given straight line , from a given point in that line . Let AB be a given straight line , and C a ...
... angles . Let BAC be the given rectilineal angle , it is required to bisect it . Take any point D in AB , and from AC ... right angles to a given straight line , from a given point in that line . Let AB be a given straight line , and C a ...
Pagina 10
... angle ECF ; and they are adja- cent angles . But , when the adjacent angles which one straight line makes with another straight line are equal to one another , each of them is called a right ( Def . 7 ) angle ; therefore each of the angles ...
... angle ECF ; and they are adja- cent angles . But , when the adjacent angles which one straight line makes with another straight line are equal to one another , each of them is called a right ( Def . 7 ) angle ; therefore each of the angles ...
Pagina 11
... angles CBA , ABE , EBD . Again , the angle DBA is equal to the two angles DBE , EBA ; add to each of these equals ... right angles ; therefore DBA , ABC are together equal to two right angles . Wherefore , the angles which one straight ...
... angles CBA , ABE , EBD . Again , the angle DBA is equal to the two angles DBE , EBA ; add to each of these equals ... right angles ; therefore DBA , ABC are together equal to two right angles . Wherefore , the angles which one straight ...
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Elements of Geometry; Containing the First Six Books of Euclid, With Two ... John 1748-1819 Playfair Anteprima non disponibile - 2021 |
Parole e frasi comuni
ABC is equal ABCD adjacent angles altitude angle ABC angle ACB angle BAC base BC bisected centre chord circle ABC circumference cosine cylinder demonstrated diameter draw equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore given circle given point given straight line hypotenuse inscribed less Let ABC Let the straight meet multiple opposite angle parallel parallelogram perpendicular plane polygon prism PROB produced proportionals proposition Q. E. D. COR Q. E. D. PROP radius rectangle contained rectilineal figure remaining angle right angles segment semicircle similar sine solid angle solid parallelepipeds spherical angle spherical triangle straight line AC straight line drawn tangent THEOR third three straight lines touches the circle triangle ABC triangle DEF wherefore