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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Σελίδα 2
... opposite to the base is called the vertex or summit . In an isosceles triangle , considered as such , the vertex is the angular point between the two equal sides , and the base the side opposite to it . In a right - angled triangle ...
... opposite to the base is called the vertex or summit . In an isosceles triangle , considered as such , the vertex is the angular point between the two equal sides , and the base the side opposite to it . In a right - angled triangle ...
Σελίδα 3
... 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- gonal of a paral- lelogram , A B C D , straight lines be B is E B drawn parallel to two ...
... 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- gonal of a paral- lelogram , A B C D , straight lines be B is E B drawn parallel to two ...
Σελίδα 5
... opposite angles shall be equal . Let the two straight lines A B , CD , cut one another in the point E : the vertical D angles A E D , BEC , B as also the vertical angles A EC , BED , shall be equal to one another . Because the angles AE ...
... opposite angles shall be equal . Let the two straight lines A B , CD , cut one another in the point E : the vertical D angles A E D , BEC , B as also the vertical angles A EC , BED , shall be equal to one another . Because the angles AE ...
Σελίδα 6
... opposite di- rections from DF ; viz . to the right of it in the one , and to the left of it in the other . The same may be observed of the next proposition , and of all cases of plane tri- angles , which are equal in every respect ...
... opposite di- rections from DF ; viz . to the right of it in the one , and to the left of it in the other . The same may be observed of the next proposition , and of all cases of plane tri- angles , which are equal in every respect ...
Σελίδα 13
... opposite upon the same side , those two straight lines shall be parallel : and conversely . Cor . 2. The angles A E F , E FD , are called alternate angles . And A E F is always equal to BEG ( 3. ) . Therefore , if one straight line fall ...
... opposite upon the same side , those two straight lines shall be parallel : and conversely . Cor . 2. The angles A E F , E FD , are called alternate angles . And A E F is always equal to BEG ( 3. ) . Therefore , if one straight line fall ...
Άλλες εκδόσεις - Προβολή όλων
Library of Useful Knowledge: Geometry plane, solid, and spherical [by Pierce ... Πλήρης προβολή - 1835 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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