Elements of Euclid Adapted to Modern Methods in GeometryWilliam Collins, Sons,, 1874 - 216 σελίδες |
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Αποτελέσματα 1 - 5 από τα 15.
Σελίδα 10
... formed by two straight lines meeting at a point ; and the point of meeting is called the vertex of the angle . B Scholium . An angle may be regarded as the amount of opening between any two positions of a straight line , con- sidered as ...
... formed by two straight lines meeting at a point ; and the point of meeting is called the vertex of the angle . B Scholium . An angle may be regarded as the amount of opening between any two positions of a straight line , con- sidered as ...
Σελίδα 11
... formed is an angle equal to two right angles . 9. A reflex angle is that which is greater than two right angles . Thus , when the line OB , in revolving round O , takes the position OD or OE , it forms with C- AO two angles AOD and AOE ...
... formed is an angle equal to two right angles . 9. A reflex angle is that which is greater than two right angles . Thus , when the line OB , in revolving round O , takes the position OD or OE , it forms with C- AO two angles AOD and AOE ...
Σελίδα 44
... formed are equal ( I. 4 ) , and by this Prop . the parallelo- grams are double of the triangles . Cor . 4. - If two straight lines make an angle , two other lines parallel to them contain an angle which is either equal or supplemental ...
... formed are equal ( I. 4 ) , and by this Prop . the parallelo- grams are double of the triangles . Cor . 4. - If two straight lines make an angle , two other lines parallel to them contain an angle which is either equal or supplemental ...
Σελίδα 65
... formed by drawing two lines from the centre of the figure to the extremities of any side , since these triangles are all equal . Thus , if a be the side and p the perpendicular from the centre upon it , the expression for the area is ...
... formed by drawing two lines from the centre of the figure to the extremities of any side , since these triangles are all equal . Thus , if a be the side and p the perpendicular from the centre upon it , the expression for the area is ...
Σελίδα 72
... forming a system of geometry . This direct , synthetic method is best adapted for setting forth the prin- ciples of any science , whether abstract , experimental , or observational , and for imparting a knowledge of what has been ...
... forming a system of geometry . This direct , synthetic method is best adapted for setting forth the prin- ciples of any science , whether abstract , experimental , or observational , and for imparting a knowledge of what has been ...
Άλλες εκδόσεις - Προβολή όλων
Elements of Euclid Adapted to Modern Methods in Geometry Euclid,James Bryce,David Munn (F.R.S.E.) Δεν υπάρχει διαθέσιμη προεπισκόπηση - 1874 |
Συχνά εμφανιζόμενοι όροι και φράσεις
AC and CB altitude angle AOB BA and AC bisecting the angle centre chord circles touch circumference cloth coincide Const conv Cor.-Hence diagonal diameter divided draw equal angles equal to BC equal to twice equiangular equilateral triangle Euclid exterior angle Fcap GEOGRAPHY geometrical given circle given line given point given straight line greater half the perimeter Hence hypotenuse inscribed intersecting isosceles triangle less Let ABC LL.D meet middle point multiple opposite sides parallel to BC parallelogram perpendicular polygon produced Proposition Q. E. D. Cor Q. E. D. PROP radius ratio rectangle contained rectilineal figure reflex angle remaining angles required to prove right angles right-angled triangle schol segments shew shewn side BC square on AC tangent THEOREM triangle ABC twice the rectangle twice the square whole line
Δημοφιλή αποσπάσματα
Σελίδα 68 - The straight line joining the middle points of two sides of a triangle is parallel to the third side, and equal to half of it.
Σελίδα 77 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Σελίδα 50 - If a parallelogram and a triangle be upon the same base, and between the same parallels; the parallelogram is double of the triangle.
Σελίδα 87 - If a straight line be divided into two equal, and also into two unequal parts, the squares on the two unequal parts are together double of the square on half the line and of the square on the line between the points of section.
Σελίδα 30 - Any two sides of a triangle are together greater than the third side.
Σελίδα 204 - Tin; rectangle, contained by the diagonals of a quadrilateral inscribed in a circle, is equal to the sum of the rectangles contained by its opposite sides. Let ABCD be any quadrilateral inscribed in a circle...
Σελίδα 89 - To divide a given straight line into two parts, so that the rectangle contained by the whole and one of the parts, shall be equal to the square on the other part.
Σελίδα 98 - Guido, with a burnt stick in his hand, demonstrating on the smooth paving-stones of the path, that the square on the hypotenuse of a right-angled triangle is equal to the sum of the squares on the other two sides.