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 TrigonometryW.E. Dean, 1836 - 311 páginas |
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Página 4
... straight line . D 6 B E N. B. ' When several angles are at one point B , any one of them is ex- ' pressed by three letters , of which the letter that is at the vertex of the an- gle , that is , at the point in which the straight lines ...
... straight line . D 6 B E N. B. ' When several angles are at one point B , any one of them is ex- ' pressed by three letters , of which the letter that is at the vertex of the an- gle , that is , at the point in which the straight lines ...
Página 5
... straight line standing on another straight line makes the adjacent angles equal to one another , each of the angles is called a right angle ; and the straight line which stands on the other , is called a perpendicu- lar to it . 8. An ...
... straight line standing on another straight line makes the adjacent angles equal to one another , each of the angles is called a right angle ; and the straight line which stands on the other , is called a perpendicu- lar to it . 8. An ...
Página 7
... straight line may be drawn from any one point to any other point . 2. That a terminated straight line may be produced to any length in a straight line . 3. And that a circle may be described from any centre , at any distance from that ...
... straight line may be drawn from any one point to any other point . 2. That a terminated straight line may be produced to any length in a straight line . 3. And that a circle may be described from any centre , at any distance from that ...
Página 12
... line AB , let the two straight lines BC , BD upon the opposite sides of AB , make the adjacent angles ABC , ABD equal together to two right angles . BD is in the same straight line with CB . For if BD be not in the same straight line 12 ...
... line AB , let the two straight lines BC , BD upon the opposite sides of AB , make the adjacent angles ABC , ABD equal together to two right angles . BD is in the same straight line with CB . For if BD be not in the same straight line 12 ...
Página 13
... straight line with CB , let BE be in the same straight line with it ; therefore , because the straight line AB makes angles with the straight line CBE , upon one side of it , the angles ABC , ABE are to- gether equal ( 6. 1. ) to two ...
... straight line with CB , let BE be in the same straight line with it ; therefore , because the straight line AB makes angles with the straight line CBE , upon one side of it , the angles ABC , ABE are to- gether equal ( 6. 1. ) to two ...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ... John Playfair Vista de fragmentos - 1836 |
Términos y frases comunes
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 draw Prob 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