## 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 Trigonometry |

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Side xv

If , for example , it be alleged , that it is needless to demonstrate that any two

If , for example , it be alleged , that it is needless to demonstrate that any two

**sides**of a triangle are greater than the third ; it may be replied , that this is no doubt a truth which , without proof , most men will be inclined to ... Side 19

Of three sided figures , an equilateral triangle is that which has three equal

Of three sided figures , an equilateral triangle is that which has three equal

**sides**, XX . An isosceles triangle is that which has only two**sides**equal . AAN XXI . A scalene triangle , is that which has three unequal**sides**. Side 20

Of four sided figures , a square is that which has all its

Of four sided figures , a square is that which has all its

**sides**equal and all its angles right angles . XXVI . An oblong , is that which has all its angles right angles , " ut has not all its**sides**equal . XXVII . Side 23

THEOREM . of A ܪ If two triangles have two

THEOREM . of A ܪ If two triangles have two

**sides**of the one equal to two**sides**of the other , each to each ; and have likewise the angles contained by those**sides**equal to one another , their bases , or third**sides**, shall be equal ... Side 24

Therefore , if two triangles have two

Therefore , if two triangles have two

**sides**of the one equal to two**sides**of the other , each to each , and have likewise the angles contained by those**sides**equal to one another ; their bases shall be equal , and their areas shall be ...### Hva folk mener - Skriv en omtale

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

Elements of Geometry: Containing the First Six Books of Euclid: With a ... John Playfair Uten tilgangsbegrensning - 1819 |

Elements of Geometry: Containing the First Six Books of Euclid with a ... John Playfair Uten tilgangsbegrensning - 1855 |

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ABC is equal ABCD altitude angle ABC angle BAC arch base bisected Book called centre circle circle ABC circumference coincide common cylinder definition demonstrated described diameter difference divided double draw drawn equal equal angles equiangular Euclid exterior angle extremity fall fore four fourth given given straight line greater half inscribed interior join less Let ABC magnitudes manner meet multiple opposite parallel parallelogram pass perpendicular plane polygon prism produced PROP proportionals proposition proved radius ratio reason rectangle contained rectilineal figure right angles segment shewn sides similar sine solid square straight line taken tangent THEOR thing third touches triangle ABC wherefore whole