Elements of Geometry: Containing the First Six Books of Euclid, with a Supplement on the Quadrature of the Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical TrigonometryB. & S. Collins; W. E. Dean, printer, 1836 - 311 páginas |
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Página 9
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. PROPOSITION I. THEOREM . If two triangles have two sides and the included angle in the one , equal to two sides and the ...
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. PROPOSITION I. THEOREM . If two triangles have two sides and the included angle in the one , equal to two sides and the ...
Página 12
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. being equal to the angle BGA , and the angle CAG equal to the angle CGA , by equal additions , the sum of the two angles ...
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. being equal to the angle BGA , and the angle CAG equal to the angle CGA , by equal additions , the sum of the two angles ...
Página 13
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. A For if BD be not in the same straight line with CB , let BE be in the same straight line with it ; therefore , because ...
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. A For if BD be not in the same straight line with CB , let BE be in the same straight line with it ; therefore , because ...
Página 15
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. AB ; the angle ABC is also greater than the angle BCA . A D Make AD equal to AB , and join BD : and because ADB is the ...
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. AB ; the angle ABC is also greater than the angle BCA . A D Make AD equal to AB , and join BD : and because ADB is the ...
Página 18
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. PROP . XVII . THEOR . A perpendicular is the shortest line that can be drawn from a point , situated with- out a straight ...
... Circle, and the Geometry of Solids; to which are Added, Elements of Plane and Spherical Trigonometry John Playfair. PROP . XVII . THEOR . A perpendicular is the shortest line that can be drawn from a point , situated with- out a straight ...
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ABC is equal ABCD adjacent angles altitude angle ABC angle ACB angle BAC angles equal base BC bisected centre chord circle ABC circumference cosine cylinder demonstrated diameter divided equal and similar equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore four right angles given straight line greater Hence hypotenuse inscribed join less Let ABC Let the straight magnitudes meet multiple opposite angle parallel parallelogram parallelopiped perpendicular polygon prism PROP proposition quadrilateral radius ratio rectangle contained rectilineal figure remaining angle right angled triangle SCHOLIUM segment semicircle shewn side BC sine solid angle solid parallelopiped spherical angle spherical triangle square straight line BC THEOR third touches the circle triangle ABC triangle DEF wherefore