The first six books of the Elements of Euclid, with numerous exercisesIngram, Cooke, 1853 - 147 σελίδες |
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Αποτελέσματα 1 - 5 από τα 18.
Σελίδα 3
... equilateral triangle is that which has three equal 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 ...
... equilateral triangle is that which has three equal 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 ...
Σελίδα 4
... equilateral triangle upon a given finite straight line . LET ab be the given straight line ; it is required to describe an equilateral triangle upon it . a c From the centre a , at the distance ab , describe ( 3 post . ) the circle bcd ...
... equilateral triangle upon a given finite straight line . LET ab be the given straight line ; it is required to describe an equilateral triangle upon it . a c From the centre a , at the distance ab , describe ( 3 post . ) the circle bcd ...
Σελίδα 5
... equilateral , and it is described upon the given straight line a b . Which was to be done . PROPOSITION II . - PROBLEM . From a given point to draw a straight line equal to a given straight line . LET a be the given point , and bc the ...
... equilateral , and it is described upon the given straight line a b . Which was to be done . PROPOSITION II . - PROBLEM . From a given point to draw a straight line equal to a given straight line . LET a be the given point , and bc the ...
Σελίδα 7
... equilateral triangle is also equiangular . PROPOSITION VI . - THEOREM . If two angles of a triangle be equal to one another , the sides which subtend , or are opposite to , the equal angles , shall also be equal to one another . LET abc ...
... equilateral triangle is also equiangular . PROPOSITION VI . - THEOREM . If two angles of a triangle be equal to one another , the sides which subtend , or are opposite to , the equal angles , shall also be equal to one another . LET abc ...
Σελίδα 9
... equilateral triangle def ; then join af ; the straight line af bisects the angle bac d a A Because a d is equal to a e , and af is common to the two triangles daf , eaf ; the two sides da , af , are equal to the two sides ea , af , each ...
... equilateral triangle def ; then join af ; the straight line af bisects the angle bac d a A Because a d is equal to a e , and af is common to the two triangles daf , eaf ; the two sides da , af , are equal to the two sides ea , af , each ...
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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.