The first six books of the Elements of Euclid, with numerous exercisesIngram, Cooke, 1853 - 147 σελίδες |
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Σελίδα 3
... sides . XXV . An isosceles triangle is that which has only two sides equal . AAA Equilateral . Isosceles . Scalene . XXVI . A scalene triangle is that which has three unequal sides . XXVII . A right - angled triangle is that which has a ...
... sides . XXV . An isosceles triangle is that which has only two sides equal . AAA Equilateral . Isosceles . Scalene . XXVI . A scalene triangle is that which has three unequal sides . XXVII . A right - angled triangle is that which has a ...
Σελίδα 4
... side of it taken together less than two right angles , these straight lines being continually produced , shall at length meet upon that side on which are the angles which are less than two right angles . PROPOSITION I. - PROBLEM . To ...
... side of it taken together less than two right angles , these straight lines being continually produced , shall at length meet upon that side on which are the angles which are less than two right angles . PROPOSITION I. - PROBLEM . To ...
Σελίδα 6
... sides of the one equal to two sides of the other , each to each ; and have likewise the angles contained by those sides equal to one another ; they shall likewise have their bases , or third sides , equal ; and the two triangles shall ...
... sides of the one equal to two sides of the other , each to each ; and have likewise the angles contained by those sides equal to one another ; they shall likewise have their bases , or third sides , equal ; and the two triangles shall ...
Σελίδα 7
... sides fa , a c are equal to the two ga , ab , each to each ; and they contain the angle fag common to the two triangles afc , agb ; there- fore the base fc is equal ( i . 4 ) to the base g b , and the triangle afc to the triangle agb ...
... sides fa , a c are equal to the two ga , ab , each to each ; and they contain the angle fag common to the two triangles afc , agb ; there- fore the base fc is equal ( i . 4 ) to the base g b , and the triangle afc to the triangle agb ...
Σελίδα 8
... side of it , which have their sides ca , da terminated in the extremity a of the base equal to one another , and like- wise their sides cb , db , that are terminated in b . a Join cd ; then , in the case in which the vertex of each of ...
... side of it , which have their sides ca , da terminated in the extremity a of the base equal to one another , and like- wise their sides cb , db , that are terminated in b . a Join cd ; then , in the case in which the vertex of each of ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
a b c abcd adjacent angles angle a cb angle abc angle bac angle edf angle equal base bc bc is equal bisected centre circle abc describe diameter double draw equal angles equal straight lines equal to f equimultiples ex æquali exterior angle fore four magnitudes fourth given circle 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 Q. E. D. PROPOSITION rectangle a b rectangle contained remaining angle right angles segment shewn square of a c square of eg straight line a b straight line ab straight line bc tiple touches the circle triangle abc triangle def twice the rectangle
Δημοφιλή αποσπάσματα
Σελίδα 40 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.
Σελίδα 2 - Let it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 19 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Σελίδα 27 - To describe a parallelogram that shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Σελίδα 36 - If a straight line be bisected and produced to any point, the rectangle contained by the whole line thus produced and the part of it produced, together with the square of...
Σελίδα 13 - If, from the ends of the side of a triangle, there be drawn two straight lines to a point within the triangle, these shall be less than, the other two sides of the triangle, but shall contain a greater angle. Let...
Σελίδα 11 - If one side of a triangle be produced, the exterior angle is greater than either of the interior opposite angles.
Σελίδα 2 - If a straight line meet two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Σελίδα 124 - 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.