The Elements of EuclidLongmans, Green and Company, 1866 - 376 páginas |
Dentro del libro
Resultados 1-5 de 100
Página 3
... sides : XXV . An isosceles triangle is that which has two sides equal : XXVI . A scalene triangle is that which has three unequal sides : XXVII . A right - angled triangle is that which has a right angle : XXVIII . An obtuse - angled ...
... sides : XXV . An isosceles triangle is that which has two sides equal : XXVI . A scalene triangle is that which has three unequal sides : XXVII . A right - angled triangle is that which has a right angle : XXVIII . An obtuse - angled ...
Página 4
... sides equal : xxxn . A rhombus is that which has all its sides equal , but its angles are not right angles : XxxIII . A rhomboid is that which has its op- posite sides equal to one another , but all its sides are not equal , nor its ...
... sides equal : xxxn . A rhombus is that which has all its sides equal , but its angles are not right angles : XxxIII . A rhomboid is that which has its op- posite sides equal to one another , but all its sides are not equal , nor its ...
Página 8
... sides of the one equal to two sides of the other , each to each , and have also the angles con- tained by those sides equal to one another , they shall also have their bases , or third sides , equal , and the two triangles shall be ...
... sides of the one equal to two sides of the other , each to each , and have also the angles con- tained by those sides equal to one another , they shall also have their bases , or third sides , equal , and the two triangles shall be ...
Página 9
... sides be produced , the angles upon the other side of the base shall be equal . Let ABC be an isosceles triangle , of which the side AB is equal to AC , and let the straight lines AB , AC be produced to D and E : the angle ABC shall be ...
... sides be produced , the angles upon the other side of the base shall be equal . Let ABC be an isosceles triangle , of which the side AB is equal to AC , and let the straight lines AB , AC be produced to D and E : the angle ABC shall be ...
Página 10
... sides BF , FC are equal to the two CG , GB , each to each , and the angle BFC has been proved to be equal to the angle CGB - therefore ( 1.4 ) ( the base BC being here common to the two triangles BFC , CGB ) the two triangles are equal ...
... sides BF , FC are equal to the two CG , GB , each to each , and the angle BFC has been proved to be equal to the angle CGB - therefore ( 1.4 ) ( the base BC being here common to the two triangles BFC , CGB ) the two triangles are equal ...
Términos y frases comunes
AB² ABCD AC² AD² adjacent angles angle ABC angle ACB angle BAC angle equal base BC BC is equal centre chord circle ABC circumference diameter double draw equal angles equal to F equiangular equilateral triangle equimultiples exterior angle fore given circle given line given point given rectilineal given straight line gnomon hypotenuse inscribed intersection isosceles triangle join less Let ABC lines be drawn lines drawn meet multiple opposite angles parallel to BC parallelogram perpendicular plane polygon PROB produced proportionals Q. E. D. PROP rectangle contained rectilineal figure remaining angle right angles segment semicircle shew shewn square on AC tangents THEOR touches the circle triangle ABC twice the rectangle vertex Wherefore