## 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, 1851 - 317 sider |

### Inni boken

Resultat 1-5 av 40

Side 10

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**right**angled triangle is that which has a**right**angle . 23. An obtuse angled triangle is that which has an obtuse angle . 24. An acute angled triangle is that which has three acute**angles**. 25. Of**four**sided figures , a square is that ... Side 11

... angles

... angles

**right angles**. 29. All other**four**sided figures besides these , are called trapeziums . 30. Parallel straight lines are such as are in the same plane , and which , being produced ever so far both ways , do not meet . POSTULATES ... Side 20

... right angles ; but the angles ABC , ABD are likewise together equal to two right angles : therefore the angles CBA ...

... right angles ; but the angles ABC , ABD are likewise together equal to two right angles : therefore the angles CBA ...

**four right angles**. COR . 2. And hence , all the angles made by any number of straight lines meeting in one point ... Side 28

... four angles KGH , HGL , CHG , GHD are together equal to

... four angles KGH , HGL , CHG , GHD are together equal to

**four right angles**( 13. 1. ) of which the two , KGH , CHG , are by supposition less than 2 two right angles ; therefore the other two , HGL 28 ELEMENTS. Side 29

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**right angles**; therefore the other two , HGL , GHD are greater than two**right angles**. Therefore , since KL and CD ...**four**acute angles BGH , AGE , GHC , DHF , are equal to each other . The same is the case with the**four**obtuse angles ...### Andre utgaver - Vis alle

Elements of Geometry: Containing the First Six Books of Euclid, with a ... Euclid,John Playfair Uten tilgangsbegrensning - 1853 |

Elements of Geometry: Containing the First Six Books of Euclid, with a ... John Playfair Uten tilgangsbegrensning - 1857 |

Elements of Geometry: Containing the First Six Books of Euclid, with a ... John Playfair Uten tilgangsbegrensning - 1836 |

### Vanlige uttrykk og setninger

ABC is equal ABCD adjacent angles altitude angle ABC angle ACB angle BAC base BC bisected centre chord circle ABC circumference cosine cylinder demonstrated described diameter divided draw equal and similar equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore four right angles given rectilineal 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 PROB PROP proportional 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 touches the circle triangle ABC triangle DEF wherefore