The First Six and the Eleventh and Twelfth Books of Euclid's Elements: With Notes and Illustrations, and an Appendix in Five BooksA. & C. Black, 1837 - 390 sider |
Inni boken
Resultat 1-5 av 100
Side 4
... proved . Thus , as will appear hereafter , it can be proved , that if a quadrilateral have all its sides equal , and have one right angle , it will have all its angles right angles ; and till the 32d proposition and its corollaries are ...
... proved . Thus , as will appear hereafter , it can be proved , that if a quadrilateral have all its sides equal , and have one right angle , it will have all its angles right angles ; and till the 32d proposition and its corollaries are ...
Side 5
... proved that a diameter divides a circle into two equal parts , by in- verting one of them and applying it to the other , so that the centres may coin . cide ; as the figures will coincide altogether , the radii being all equal . It is ...
... proved that a diameter divides a circle into two equal parts , by in- verting one of them and applying it to the other , so that the centres may coin . cide ; as the figures will coincide altogether , the radii being all equal . It is ...
Side 7
... proved , to be true , and from this deduces a series of other truths , each depending on what precedes , till it finally arrives at the truth to be proved . In the indirect or negative demonstration , or as it is also called , the ...
... proved , to be true , and from this deduces a series of other truths , each depending on what precedes , till it finally arrives at the truth to be proved . In the indirect or negative demonstration , or as it is also called , the ...
Side 8
... proved that CA is equal to AB ; therefore CA , CB are each of them equal to AB : but things which are equal to the same are equal ( I. axiom 1. ) to one another ; therefore CA is equal to CB ; wherefore CA , AB , BC are equal to one ...
... proved that CA is equal to AB ; therefore CA , CB are each of them equal to AB : but things which are equal to the same are equal ( I. axiom 1. ) to one another ; therefore CA is equal to CB ; wherefore CA , AB , BC are equal to one ...
Side 10
... respectively to two sides and the contained angle in the other ; and it is proved that if this be so , the triangles must be in every respect equal . B shall coincide with the point E , because ( 10 [ Book I. THE ELEMENTS.
... respectively to two sides and the contained angle in the other ; and it is proved that if this be so , the triangles must be in every respect equal . B shall coincide with the point E , because ( 10 [ Book I. THE ELEMENTS.
Andre utgaver - Vis alle
The First Six and the Eleventh and Twelfth Books of Euclid's Elements: With ... Euclid Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
ABCD altitude angle ABC angle BAC angle equal BC is equal bisected centre chord circle ABC circumference cone const contained cylinder describe a circle diagonal diameter divided draw equal angles equal to AC equiangular equilateral Euclid exterior angle fore fourth given circle given point given ratio given straight line greater half Hence hypotenuse inscribed join less Let ABC magnitudes manner multiple opposite parallel parallelepiped parallelogram perpendicular polygon polyhedron prism PROB produced PROP proportional proposition pyramid radius rectangle rectilineal figure right angles Schol segments semicircle sides similar similar triangles solid angles square of AC straight lines drawn tangent THEOR third triangle ABC triplicate ratio vertex vertical angle wherefore
Populære avsnitt
Side 94 - 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.
Side 53 - If a straight line be divided into any two parts, the squares of the whole line and of one of the parts are equal to twice the rectangle contained by the whole and that part, together with the square of the other part. Let the straight line AB be divided into any two parts at the point C : the squares of AB, BC shall be equal to twice the rectangle AB, BC, together with the square of AC.
Side 143 - 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.
Side 4 - A rhombus is that which has all its sides equal, but its angles are not right angles.
Side 57 - 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 on the other part.
Side 138 - IF a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those produced, proportionally; and if the sides, or the sides produced, be cut proportionally, the straight line which joins the points of section shall be parallel to the remaining side of the triangle...
Side 43 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.
Side 32 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 40 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Side 36 - PARALLELOGRAMS upon the same base, and between the same parallels, are equal to one another...