The geometry, by T. S. Davies. Conic sections, by Stephen FenwickJ. Weale, 1853 |
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Seite 10
... drawn at right angles to AB . Which was to be done . COR . By help of this problem , it may be demonstrated , that two straight lines cannot have a common segment . E If it be possible , let the two straight lines ABC , ABD have the ...
... drawn at right angles to AB . Which was to be done . COR . By help of this problem , it may be demonstrated , that two straight lines cannot have a common segment . E If it be possible , let the two straight lines ABC , ABD have the ...
Seite 30
... drawn parallel to the base , it will bisect the angles at the vertex made by producing the equal sides of the ... drawn through their intersection bisects the parallelogram . 8. If through the middle of a line intercepted between two ...
... drawn parallel to the base , it will bisect the angles at the vertex made by producing the equal sides of the ... drawn through their intersection bisects the parallelogram . 8. If through the middle of a line intercepted between two ...
Seite 31
... drawn to join the adjacent points of bisection , they will form a parallelogram equal to half the given quadrilateral . 14. If the two diagonals of a parallelogram be equal , all the angles of the parallelogram are right angles . 15. If ...
... drawn to join the adjacent points of bisection , they will form a parallelogram equal to half the given quadrilateral . 14. If the two diagonals of a parallelogram be equal , all the angles of the parallelogram are right angles . 15. If ...
Seite 32
... drawn from a given point to a given straight line , whether the point be in the line or without it . 28 The perpendicular is the shortest line that can be drawn to a line from a point without it . 29. Of straight lines drawn to a given ...
... drawn from a given point to a given straight line , whether the point be in the line or without it . 28 The perpendicular is the shortest line that can be drawn to a line from a point without it . 29. Of straight lines drawn to a given ...
Seite 44
... drawn from the vertex of a triangle to the middle of the base , the sum of the squares on the two sides is double the square on that line , together with double the square on half the base . 8. Three times the sum of the squares on the ...
... drawn from the vertex of a triangle to the middle of the base , the sum of the squares on the two sides is double the square on that line , together with double the square on half the base . 8. Three times the sum of the squares on the ...
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Häufige Begriffe und Wortgruppen
ABC is equal ABCD adjacent angles angle ABC angle BAC axis bisected centre circle ABC circumference coincide cone construction coordinate planes described Descriptive Geometry diameter dicular dihedral angles draw edges ellipse equal angles equiangular equimultiples given line given point given straight line greater hence horizontal hyperbola inclination intersection join less Let ABC Let the plane line BC lines drawn magnitudes meet multiple orthograph parabola parallel planes parallelogram parallelopiped perpen perpendicular perpendicular to MN plane MN plane of projection plane parallel plane PQ prisms profile angles profile plane projecting plane Prop Q. E. D. PROPOSITION ratio rectangle rectangle contained rectilineal figure remaining angle respectively right angles SCHOLIUM segment sides six right sphere spherical angle tangent THEOR trace triangle ABC trihedral vertex Whence Wherefore