Elements of Geometry |
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Αποτελέσματα 6 - 10 από τα 20.
Σελίδα 52
Q . E . D . Ex . A B C and A B D are two triangles on the same base A B , and on
the same side of it , the vertex of each triangle being without the other . If A C
equal A D , show that BC cannot equal B D . PROPOSITION XXXIV . THEOREM .
Q . E . D . Ex . A B C and A B D are two triangles on the same base A B , and on
the same side of it , the vertex of each triangle being without the other . If A C
equal A D , show that BC cannot equal B D . PROPOSITION XXXIV . THEOREM .
Σελίδα 53
Much more is 2 ACB > B . and Q . E . D . Ex . If the angles A B C and AC B , at the
base of an isosceles triangle , be bisected by the straight lines BD , CD , show
that DBC will be an isosceles triangle . PROPOSITION XXXV . THEOREM . 119 .
Much more is 2 ACB > B . and Q . E . D . Ex . If the angles A B C and AC B , at the
base of an isosceles triangle , be bisected by the straight lines BD , CD , show
that DBC will be an isosceles triangle . PROPOSITION XXXV . THEOREM . 119 .
Σελίδα 72
Show that the sum of the interior angles of a hexagon is equal to eight right
angles . 2 . Show that each angle of an equiangular pentagon is fe of a right
angle . 3 . How many sides has an equiangular polygon , four of whose angles
are ...
Show that the sum of the interior angles of a hexagon is equal to eight right
angles . 2 . Show that each angle of an equiangular pentagon is fe of a right
angle . 3 . How many sides has an equiangular polygon , four of whose angles
are ...
Σελίδα 84
Show that , of all straight lines drawn from a point without a circle to the
circumference , the least is that which , when produced , passes through the
centre . Ex . 2 . Show that , of all straight lines drawn from a point within or without
a circle to ...
Show that , of all straight lines drawn from a point without a circle to the
circumference , the least is that which , when produced , passes through the
centre . Ex . 2 . Show that , of all straight lines drawn from a point within or without
a circle to ...
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Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acute adjacent altitude arc A B base bisect called centre chord circle circumference circumscribed coincide common Cons construct contained COROLLARY describe diagonals diameter difference direction divided Draw equal distances equal respectively equilateral equivalent erected extremities fall figure formed four given given line greater homologous sides hypotenuse included inscribed intersect isosceles joining less Let A B limit line A B lines drawn mean measured meet middle point multiplied one-half opposite sides parallelogram perimeter perpendicular plane position PROBLEM proportional prove Q. E. D. PROPOSITION quantities radii radius equal ratio rect rectangles regular polygon right angles segment shortest Show similar similar polygons square straight line Substitute subtend surface symmetrical tangent THEOREM triangle variable vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 30 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Σελίδα 116 - To describe an isosceles triangle having each of the angles at the base double of the third angle.
Σελίδα 126 - The first of four magnitudes is said to have the same ratio to the second which the third has to the fourth, when...
Σελίδα 197 - Construct a rectangle having the difference of its base and altitude equal to a given line, and its area equivalent to the sum of a given triangle and a given pentagon.
Σελίδα 192 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 132 - If a line divides two sides of a triangle proportionally, it is parallel to the third side.
Σελίδα 165 - Any two rectangles are to each other as the products of their bases by their altitudes.
Σελίδα 62 - Every point in the bisector of an angle is equally distant from the sides of the angle ; and every point not in the bisector, but within the angle, is unequally distant from the sides of the angle.
Σελίδα 63 - A CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Σελίδα 136 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
Πληροφορίες βιβλιογραφίας
| Τίτλος | Elements of Geometry |
| Συγγραφέας | George Albert Wentworth |
| Εκδότης | Ginn and Heath, 1881 |
| Πρωτότυπο από | Πανεπιστήμιο Χάρβαρντ |
| Ψηφιοποιήθηκε στις | 28 Φεβ. 2007 |
| Εξαγωγή αναφοράς | BiBTeX EndNote RefMan |