The geometry, by T. S. Davies. Conic sections, by Stephen FenwickJ. Weale, 1853 |
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Σελίδα 2
... less than a right angle . 13. A term or boundary is the extremity of anything . 14. A figure is that which is enclosed by one or more boundaries . 15. A circle is a plane figure contained by one line , which is called the circumference ...
... less than a right angle . 13. A term or boundary is the extremity of anything . 14. A figure is that which is enclosed by one or more boundaries . 15. A circle is a plane figure contained by one line , which is called the circumference ...
Σελίδα 4
... less than two right angles , these straight lines being continually produced , shall at length meet upon that side on which are the angles which are less than two right angles . PROPOSITIONS . PROPOSITION I. PROBLEM . To describe an ...
... less than two right angles , these straight lines being continually produced , shall at length meet upon that side on which are the angles which are less than two right angles . PROPOSITIONS . PROPOSITION I. PROBLEM . To describe an ...
Σελίδα 5
... less . Let AB and C be the two given straight lines , whereof AB is the greater . It is required to cut off from AB , the greater , a part equal to C , the less . From the point A draw ( 2. 1. ) the straight line AD equal to C ; and ...
... less . Let AB and C be the two given straight lines , whereof AB is the greater . It is required to cut off from AB , the greater , a part equal to C , the less . From the point A draw ( 2. 1. ) the straight line AD equal to C ; and ...
Σελίδα 6
... less , and join FC , GB . Because AF is equal ( Constr . ) to AG , and AB to ( Hyp . ) AC , the two sides FA , AC are equal to the two GA , AB , each to each ; and they contain the angle FAG common to the two triangles AFC , AGB ...
... less , and join FC , GB . Because AF is equal ( Constr . ) to AG , and AB to ( Hyp . ) AC , the two sides FA , AC are equal to the two GA , AB , each to each ; and they contain the angle FAG common to the two triangles AFC , AGB ...
Σελίδα 7
... less , and join DC ; therefore , because in the triangles DBC , ACB , DB is equal to AC ( Constr . ) , and BC common to both , the two sides , DB , BC are equal to the two AC , CB , each to each ; and the angle DBC is equal to the angle ...
... less , and join DC ; therefore , because in the triangles DBC , ACB , DB is equal to AC ( Constr . ) , and BC common to both , the two sides , DB , BC are equal to the two AC , CB , each to each ; and the angle DBC is equal to the angle ...
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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