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 Boeken Boek 1 - 10 van 178 over Two triangles, which have an angle of the one equal to an angle of the other, and.... Two triangles, which have an angle of the one equal to an angle of the other, and the sides containing those angles proportional, are similar. The Elements of geometry; or, The first six books, with the eleventh and ... - Pagina 143
door Euclides - 1855
Volledige weergave - Over dit boek ## An Elementary Treatise on the Geometrical and Algebraical Investigation of ...

Daniel Cresswell - 1817 - 436 pagina’s
...chord has to the aggregate of the two chords that are next to it. PROP. VI. (XVII.) If two trapeziums have an angle of the one equal to an angle of the other, and if, also, the sides of the two figures, about each of their angles, be proportionals, the remaining...
Volledige weergave - Over dit boek ## A Supplement to the Elements of Euclid

Daniel Cresswell - 1819 - 410 pagina’s
...CJDF: .-. AC : DF : : AG or AB X BC~: DI or DE X EF. 10. COR. Triangles, having equal vertical angles, are to one another as the rectangles contained by the sides about those equal angles. PROP. VI. 11. THEOREM. The straight lines, drawn from the bisections of the three sides...
Volledige weergave - Over dit boek ## A supplement to the Elements of Euclid

Daniel Cresswell - 1819
...FAE, FH :HE::AF:AE; that is, FG is to GE in the given ratio. PROP. XVU. 23. THEOREM. If two trapeziums have an angle of the one equal to an angle of the other, and if, also, the sides of the two ^figures, about each of their angles, be proportionals, the remaining...
Volledige weergave - Over dit boek ## Elements of Geometry

Adrien Marie Legendre - 1819 - 208 pagina’s
...general properties of triangles involve those of all figures, THEOREM. 208. Two triangles, whkh Iiave an angle of the one equal to an angle of the other and the sides about these angles proportional, are similar. Fig. 122. Demonstration. Let the angle...
Volledige weergave - Over dit boek ## The new practical builder, and workman's companion, Volume 2

Peter Nicholson - 1823
...triangle ABC ; therefore, also, the triangles DEF, ABC, are equiangular and similar. THEOREM 60. 158. Two triangles which have an angle of the one equal to an angle of the other, and the sides about them proportionals, are similar. Let the angle A equal D, and suppose that AB :...
Volledige weergave - Over dit boek ## Elements of Geometry

Adrien Marie Legendre - 1825 - 224 pagina’s
...triangles. Thus the general properties of triangles involve those of all figures. THEOREM. 208. Two triangles, which have an angle of the one equal to an angle of the other and the sides about these angles proportional, are similar. Demonstration. Let the angle A-=D (fig....
Volledige weergave - Over dit boek ## Elements of Geometry...: Translated from the French for the Use of the ...

Adrien Marie Legendre, John Farrar - 1825 - 224 pagina’s
...triangles. Thus the general properties of triangles involve those of all figures. THEOREM. 208. Two triangles, which have an angle of the one equal to an angle of the other and the sides about these angles proportional, are similar. Demonstration. Let the angle A = D (Jig....
Volledige weergave - Over dit boek ## Elements of Geometry

Adrien Marie Legendre - 1825 - 224 pagina’s
...: FH : : CD : HI ; but we have seen that the angle ACD = FHI; consequently the triangles ACD, FHI, have an angle of the one equal to an angle of the other and the sides about the equal angles proportional ; they are therefore similar (208). We might proceed...
Volledige weergave - Over dit boek ## Elements of Geometry...: Translated from the French for the Use of the ...

Adrien Marie Legendre - 1825 - 224 pagina’s
...AC : FH : : CD : HI; but we have seen that the angle ACD = FHI; consequently the triangles ACD, FHI, have an angle of the one equal to an angle of the other and the sides about the equal angles proportional ; they are therefore similar (208). We might proceed...
Volledige weergave - Over dit boek ## The Geometrical Companion: In which the Elements of Abstract Geometry are ...

George Darley - 1828 - 169 pagina’s
...proportional, are equal." Here we have a criterion whereby to judge of the equality of two triangular surfaces, which have an angle of the one equal to an angle of the other. For example : ABCD is a road cutting off a triangular field AOB. It is desirable that the line of road...
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