Library of Useful Knowledge: Geometry plane, solid, and spherical [by Pierce Morton] 1830. Elements of trigonometry, by W. Hopkins. 1833. Elements of spherical trigonometry, by A. De Morgan. A treatise on algebraical geometry, by S.W. Waud. 1835Baldwin & Craddock, 1835 |
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Seite 2
... parallelogram AC " , " the trape- zoid A E. " This plan is never adopted , however , where confusion might ensue ... parallelogram which has two adjoining sides equal . D E B 19. A rectangle is a parallelogram which has a right angle . A ...
... parallelogram AC " , " the trape- zoid A E. " This plan is never adopted , however , where confusion might ensue ... parallelogram which has two adjoining sides equal . D E B 19. A rectangle is a parallelogram which has a right angle . A ...
Seite 3
... parallelogram or triangle , is a perpendicular drawn to the base from the side or angle opposite . 22. The diagonals of a quadrilateral are the straight lines which join its op- posite angles . 23. If through a point , E , in the dia ...
... parallelogram or triangle , is a perpendicular drawn to the base from the side or angle opposite . 22. The diagonals of a quadrilateral are the straight lines which join its op- posite angles . 23. If through a point , E , in the dia ...
Seite 13
... it appears that the qua- drilaterals into which the parallelogram ABCD is divided in def . 23. , by lines drawn parallel to two adjacent sides , PROP . 20. ( EUC . i . 32. Corr I. § 3. ] 13 GEOMETRY . 53 XI iv 30 51 31.
... it appears that the qua- drilaterals into which the parallelogram ABCD is divided in def . 23. , by lines drawn parallel to two adjacent sides , PROP . 20. ( EUC . i . 32. Corr I. § 3. ] 13 GEOMETRY . 53 XI iv 30 51 31.
Seite 14
... will be divided ( 6. ) the converse , the triangle being made up of two isosceles triangles , one of its angles is equal to the other two . Cor . Every parallelogram is equal to a rectangle of 14 fI . § 3 . GEOMETRY . Cor 32.
... will be divided ( 6. ) the converse , the triangle being made up of two isosceles triangles , one of its angles is equal to the other two . Cor . Every parallelogram is equal to a rectangle of 14 fI . § 3 . GEOMETRY . Cor 32.
Seite 15
... parallelogram . Let ABCD be a parallelogram ( see the last figure ) , and let its diagonals AC , BD cut one another in the point E : the sides AD , BC , as also , AB , CD , shall be equal to one another the angles A and C , as also B ...
... parallelogram . Let ABCD be a parallelogram ( see the last figure ) , and let its diagonals AC , BD cut one another in the point E : the sides AD , BC , as also , AB , CD , shall be equal to one another the angles A and C , as also B ...
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A B C ABCD adjacent angles altitude apothem base BC bisect centre chord circum circumference circumscribed coincide common measure common section compounded cone conic section contained convex surface cylinder describe a circle diameter dihedral angle divided draw drawn edges equal angles equimultiples ference fore four magnitudes frustum given point given straight line gles harmonical harmonical mean Hence hyperbola hypotenuse inscribed join likewise locus meet parallel parallelogram parallelopiped pass pendicular pentagon perimeter perpendicular plane prism Prob produced PROP proposition pyramid quadrilateral radii radius rallel rectangle rectilineal figure regular polygon respectively right angles Scholium scribed segment sides A B similar solid angles sphere spherical angle square of A B straight lines A B tangent third three sides touch triangle ABC vertex vertical