The Harpur Euclid: An Edition of Euclid's ElementsRivingtons, 1890 - 515 σελίδες |
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Σελίδα 18
... vertices , as D , be within the other triangle ACB , produce AC , AD to E and F respectively . Then because AC is equal to AD , [ HYP . therefore the angle ECD is equal to the angle FDC ; [ I. 5 . But the angle ECD is greater than the ...
... vertices , as D , be within the other triangle ACB , produce AC , AD to E and F respectively . Then because AC is equal to AD , [ HYP . therefore the angle ECD is equal to the angle FDC ; [ I. 5 . But the angle ECD is greater than the ...
Σελίδα 41
... vertices of a triangle is greater than half the sum of the sides . Ex . 29. — Enunciate and prove a similar theorem as regards a quadri- lateral . Can it be extended to other polygons ( figures with more sides than three ) ? The four ...
... vertices of a triangle is greater than half the sum of the sides . Ex . 29. — Enunciate and prove a similar theorem as regards a quadri- lateral . Can it be extended to other polygons ( figures with more sides than three ) ? The four ...
Σελίδα 78
... triangles , having two given points as vertices . The set consists of two bencils , one of parallels and the other of con . current lines . PROPOSITION 42. PRoblem . To describe a parallelogram that shall 78 Euclid's Elements .
... triangles , having two given points as vertices . The set consists of two bencils , one of parallels and the other of con . current lines . PROPOSITION 42. PRoblem . To describe a parallelogram that shall 78 Euclid's Elements .
Σελίδα 102
... vertices which it joins . 3d . The other two angles are equal . 4th . The axis divides it into two congruent triangles , with equal sides adjacent . 5th . The median lines meet on the axis , and are equally inclined to it . Again ...
... vertices which it joins . 3d . The other two angles are equal . 4th . The axis divides it into two congruent triangles , with equal sides adjacent . 5th . The median lines meet on the axis , and are equally inclined to it . Again ...
Σελίδα 111
... two given straight lines . Hence also , show that any number of equilateral triangles can be described with their vertices one on each of three given straight lines . Ex . 122 - O is a fixed point , On Solving Geometrical Problems . III.
... two given straight lines . Hence also , show that any number of equilateral triangles can be described with their vertices one on each of three given straight lines . Ex . 122 - O is a fixed point , On Solving Geometrical Problems . III.
Άλλες εκδόσεις - Προβολή όλων
The Harpur Euclid: An Edition of Euclid's Elements, Revised in Accordance ... Edward Mann Langley,Euclid,W. Seys Phillips Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
bisect bisector Brocard point chord circum-circle of triangle circumference coincide common concyclic congruent cyclic quadrilateral demonstration described diagonals diameter diamr divided draw equal angles equiangr equiangular equidistant equilateral triangle equimultiples Euclid exterior angle Geometry given circle given point given ratio given st given straight line given triangle greater Hence inscribed intersect isosceles isosceles triangle Join Let ABC locus magnitude meet mid-point opposite sides parallel parallelogram pass pentagon perpendicular plane produced Prop PROPOSITION PROPOSITION 13 radical axis radius rect rectangle contained reqd rhombus right angles segment Show sides BC similar Similarly Simson's line square straight line drawn student subtended symmedian symmedian point tangent THEOREM touch triangle ABC vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 21 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Σελίδα 369 - 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.
Σελίδα 390 - ... figures are to one another in the duplicate ratio of their homologous sides.
Σελίδα 97 - Let it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 370 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Σελίδα 96 - 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.
Σελίδα 40 - Any two sides of a triangle are together greater than the third side.
Σελίδα 143 - Three times the sum of the squares on the sides of a triangle is equal to four times the sum of the squares of the lines joining the middle point of each side with the opposite angles.
Σελίδα 407 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.
Σελίδα 156 - 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...