The first six books of the Elements of Euclid, with numerous exercisesIngram, Cooke, 1853 - 147 páginas |
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... angle at a point , it may be expressed by a letter placed at that point ; as the angle at e . X. 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 . X. 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 ...
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... right - angled triangle is that which has a right angle . XXVIII . An obtuse - angled triangle is that which has an ... angles . XXX . Of four - sided figures , a square is that which has all its sides equal , and all its angles ...
... right - angled triangle is that which has a right angle . XXVIII . An obtuse - angled triangle is that which has an ... angles . XXX . Of four - sided figures , a square is that which has all its sides equal , and all its angles ...
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... right angles are equal to one another . XII . If a straight line meets two straight lines , so as to make the two interior angles on the same side of it taken together less than two right angles , these straight lines being continually ...
... right angles are equal to one another . XII . If a straight line meets two straight lines , so as to make the two interior angles on the same side of it taken together less than two right angles , these straight lines being continually ...
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... right angles to a given straight line , from a given point in the same . LET ab be a given straight line , and ca point given in it ; it is required to draw a straight line from the point c at right angles to a b . Take any point din ac ...
... right angles to a given straight line , from a given point in the same . LET ab be a given straight line , and ca point given in it ; it is required to draw a straight line from the point c at right angles to a b . Take any point din ac ...
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... angles equal to one another , each of them is a right angle ; and the straight line which stands upon the other is ... angles which one straight line makes with another upon one side of it are either two right angles , or are ...
... angles equal to one another , each of them is a right angle ; and the straight line which stands upon the other is ... angles which one straight line makes with another upon one side of it are either two right angles , or are ...
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Términos y frases comunes
ac is equal adjacent angles alternate angles angle abc angle acb angle bac angle edf angle equal base bc bisected centre circle abc diameter double draw duplicate ratio equal angles equal straight lines equal to f equimultiples ex æquali exterior angle fore four magnitudes fourth given circle given rectilineal figure given straight line gnomon greater ratio greater than f ILLUSTRATED LONDON inscribe less LET abc LET the straight likewise multiple opposite angle parallel parallelogram perpendicular produced Q. E. D. PROPOSITION rectangle contained remaining angle right angles segment semicircle shewn side bc similar and similarly square of ac straight line ab straight line ac straight line drawn THEOREM tiple touches the circle triangle abc triangle def twice the rectangle