## 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 TrigonometryCollins & Hannay, 1860 - 333 sider |

### Inni boken

Resultat 1-3 av 53

Side 42

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**four**right angles . Therefore , twice as many right angles as the figure has sides , are equal to all E A B the angles of the figure , together with**four**right angles , that is , the angles of the figure are equal to twice as many right ...Side 110

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**four**magnitudes are continual proportionals , the ratio of the first to the fourth is said to be triplicate of the ratio of the first to the second , or of the ratio of the second to the third , & c . So also , if there are five ...Side 308

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**four**right angles ; but the angles which it has described are the three exterior angles of the triangle ABC , therefore the exterior angles of the triangle ABC are equal to**four**right angles . 2. If the rectilineal figure have any ...### Andre utgaver - Vis alle

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### Vanlige uttrykk og setninger

ABC is equal ABCD altitude angle ABC angle ACB angle BAC angle EDF arch AC base BC bisected centre circle ABC circumference cosine cylinder demonstrated diameter draw equal and similar equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore four right angles given straight line greater hypotenuse inscribed join less Let ABC Let the straight line BC magnitudes meet multiple opposite angle parallel parallelogram perpendicular polygon prism PROB produced proportionals proposition Q. E. D. COR Q. E. D. PROP radius ratio rectangle contained rectilineal figure remaining angle segment semicircle side BC sine solid angle solid parallelopipeds spherical angle spherical triangle straight line AC THEOR third touches the circle triangle ABC triangle DEF wherefore