The first six books of the Elements of Euclid, with numerous exercises |
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Αποτελέσματα 1 - 5 από τα 25.
Σελίδα 2
A figure is that which is enclosed by one or more boundaries . XV . A circle is a plain figure contained by one line ... Rectilineal figures , are those which are contained by straight lines . XXI . Trilateral figures , or triangles ...
A figure is that which is enclosed by one or more boundaries . XV . A circle is a plain figure contained by one line ... Rectilineal figures , are those which are contained by straight lines . XXI . Trilateral figures , or triangles ...
Σελίδα 22
... rectilineal figure , together with e a : four right angles , are equal to 22 THE ELEMENTS OF EUCLID .
... rectilineal figure , together with e a : four right angles , are equal to 22 THE ELEMENTS OF EUCLID .
Σελίδα 23
e a : four right angles , are equal to twice as many right angles as the figure has sides . d For any rectilineal figure a bcde , can be divided into as many triangles as the figure has sides , by drawing straight lines from a point f ...
e a : four right angles , are equal to twice as many right angles as the figure has sides . d For any rectilineal figure a bcde , can be divided into as many triangles as the figure has sides , by drawing straight lines from a point f ...
Σελίδα 29
... and bk , k d , the other £ parallelograms which make up the whole figure a bed , which are therefore called the complements . ... LET a b be the given straight line , and c the given triangle , and d the given rectilineal angle .
... and bk , k d , the other £ parallelograms which make up the whole figure a bed , which are therefore called the complements . ... LET a b be the given straight line , and c the given triangle , and d the given rectilineal angle .
Σελίδα 30
To describe a parallelogram equal to a given rectilineal figure , and having an angle equal to a given rectilineal angle . LET abcd be the given rectilineal figure , and e the given rectilineal angle . It is required to describe a ...
To describe a parallelogram equal to a given rectilineal figure , and having an angle equal to a given rectilineal angle . LET abcd be the given rectilineal figure , and e the given rectilineal angle . It is required to describe a ...
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a b c angle a b c angle bac base base bc bc is equal bisected centre circle circumference common compounded definition demonstrated describe diameter divided double draw equal angles equal to f equiangular equilateral equimultiples exterior angle extremity fall fore four fourth given straight line greater half ILLUSTRATED inscribe join less likewise magnitudes manner meet multiple parallel parallelogram pass perpendicular produced proportionals PROPOSITION ratio reason rectangle contained rectilineal figure remaining angle right angles segment shewn sides similar square square of a c straight line a b Take taken third touches the circle triangle triangle a b c wherefore whole