The first six books of the Elements of Euclid, with numerous exercisesIngram, Cooke, 1853 - 147 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 6 - 10 από τα 55.
Σελίδα 46
... angles , four times the sum of the squares of these lines shall be equal to three times the sum of the squares of the three sides of the triangle . BOOK III . DEFINITIONS . I. EQUAL circles are those 46 THE ELEMENTS OF EUCLID . Exercises.
... angles , four times the sum of the squares of these lines shall be equal to three times the sum of the squares of the three sides of the triangle . BOOK III . DEFINITIONS . I. EQUAL circles are those 46 THE ELEMENTS OF EUCLID . Exercises.
Σελίδα 47
... circles be applied to one another , so that their centres coincide , the circles must likewise coincide , since the straight lines from the centres are equal . II . A straight line is said to touch a circle when it meets the circle ...
... circles be applied to one another , so that their centres coincide , the circles must likewise coincide , since the straight lines from the centres are equal . II . A straight line is said to touch a circle when it meets the circle ...
Σελίδα 48
... circle is the figure contained by two straight lines drawn from the centre , and the circumference between them . Definition X. XI . Similar segments of a circle are those in which the angles are equal , or which contain equal angles ...
... circle is the figure contained by two straight lines drawn from the centre , and the circumference between them . Definition X. XI . Similar segments of a circle are those in which the angles are equal , or which contain equal angles ...
Σελίδα 49
... circle a bc . Which was to be found . COR . From this it is manifest , that if in a circle a straight line bisect another at right angles , the centre of the circle is in the line which bisects the other . e d PROPOSITION II . - THEOREM ...
... circle a bc . Which was to be found . COR . From this it is manifest , that if in a circle a straight line bisect another at right angles , the centre of the circle is in the line which bisects the other . e d PROPOSITION II . - THEOREM ...
Σελίδα 50
... circle bisect a straight line in it which does not pass through the centre , it shall cut it at right angles ; and if it cuts it at right angles , it shall bisect it . LET abc be a circle ; and let cd , a straight line drawn through the ...
... circle bisect a straight line in it which does not pass through the centre , it shall cut it at right angles ; and if it cuts it at right angles , it shall bisect it . LET abc be a circle ; and let cd , a straight line drawn through the ...
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 pentagon perpendicular Q. E. D. PROPOSITION rectangle a d 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 2 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another : XVI.
Σελίδα 42 - 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 4 - Let it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 21 - 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 29 - 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 38 - 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 15 - 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 13 - If one side of a triangle be produced, the exterior angle is greater than either of the interior opposite angles.
Σελίδα 4 - 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 126 - 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.