Geometry Without Axioms; Or the First Book of Euclid's Elements. With Alterations and Familiar Notes; and an Intercalary Book in which the Straight Line and Plane are Derived from Properties of the Sphere ...: To which is Added an Appendix ...Robert Heward, 1833 - 150 σελίδες |
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Αποτελέσματα 6 - 10 από τα 34.
Σελίδα 42
... interior to the surface of the sphere with the radius BM ; and be- cause the surfaces of the two spheres are respectively interior to the surfaces of the two others , their intersection , in which is N , will not coincide with the ...
... interior to the surface of the sphere with the radius BM ; and be- cause the surfaces of the two spheres are respectively interior to the surfaces of the two others , their intersection , in which is N , will not coincide with the ...
Σελίδα 69
... interior opposite angles . Let ABC be a triangle , and let its side BC be prolonged to D. The exterior angle ACD is greater than either of the interior opposite angles CAB , CBA . Bisect + CA , in E ; join BE , and prolong it to F ; and ...
... interior opposite angles . Let ABC be a triangle , and let its side BC be prolonged to D. The exterior angle ACD is greater than either of the interior opposite angles CAB , CBA . Bisect + CA , in E ; join BE , and prolong it to F ; and ...
Σελίδα 70
... interior opposite angles . + I. 15 . Cor.2 . * INTERC.12 . Cor . 6 . + I. 16 . Cor . 6 . * I. 12 . And by parity of reasoning , the like may be proved in every other triangle . Wherefore , universally , if one side of a triangle be ...
... interior opposite angles . + I. 15 . Cor.2 . * INTERC.12 . Cor . 6 . + I. 16 . Cor . 6 . * I. 12 . And by parity of reasoning , the like may be proved in every other triangle . Wherefore , universally , if one side of a triangle be ...
Σελίδα 71
... interior opposite angle DCB . But because AD is equal to AB , the angle ABD is * equal to ADB ; there- fore the angle ABD ist greater than DCB ; still more is the angle ABC ( which is greater than ABD ) greater than DCB . And by parity ...
... interior opposite angle DCB . But because AD is equal to AB , the angle ABD is * equal to ADB ; there- fore the angle ABD ist greater than DCB ; still more is the angle ABC ( which is greater than ABD ) greater than DCB . And by parity ...
Σελίδα 73
... interior opposite angle , the exterior angle DEC of the triangle EAB is greater than the angle EAB . And for the same reason the exterior angle BDC of the triangle DEC is greater than the angle DEC . Still more , then , is it greater ...
... interior opposite angle , the exterior angle DEC of the triangle EAB is greater than the angle EAB . And for the same reason the exterior angle BDC of the triangle DEC is greater than the angle DEC . Still more , then , is it greater ...
Άλλες εκδόσεις - Προβολή όλων
Geometry Without Axioms; Or the First Book of Euclid's Elements. with ... Thomas Perronet Thompson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD adjacent angles alternate angles angle ABC angle ACB angle BAC angular points assigned point Axiom axis base BC bisected called CEGDHF central distances change of place circle coincide throughout Constr demonstrated double equal angles equal straight lines equal to AC equal to EF equilateral triangle Euclid exterior angle extremities four right angles Geometry given straight line greater half the angle hard body inclose a space instance INTERC Intercalary Book ist equal join line AC magnitude manner meet opposite angles parallelogram parity of reasoning pass perpendicular prolonged Prop PROPOSITION proved quadrilateral radii radius rectilinear figure remain unmoved remaining angle remains at rest respectively SCHOLIUM self-rejoining line shown side BC side opposite situation sphere whose centre straight line BC tessera THEOREM.-If third side triangle ABC turned unlimited length Wherefore
Δημοφιλή αποσπάσματα
Σελίδα 51 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Σελίδα 109 - PARALLELOGRAMS upon the same base, and between the same parallels, are equal to one another...
Σελίδα 111 - Parallelograms upon the same base and between the same parallels, are equal to one another.
Σελίδα 120 - If the square described on one of the sides of a triangle be equal to the squares described on the other two sides of it, the angle contained by these two sides is a right angle.
Σελίδα 72 - Any two sides of a triangle are together greater than the third side.
Σελίδα 55 - From the greater of two given straight lines to cut off a part equal to the less. Let AB and C be the two given straight lines, whereof AB is the greater.
Σελίδα 103 - ... twice as many right angles as the figure has sides.
Σελίδα 70 - Any two angles of a triangle are together less than two right angles.
Σελίδα 138 - ... the exterior angle equal to the interior and opposite on the same side of the line ; and likewise the two interior angles on the same side of the line together equal to two right angles.
Σελίδα 106 - THE straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel.