Introduction and books 1,2The University Press, 1908 |
Inni boken
Resultat 1-5 av 100
Side 23
... triangle which is constructed to be constructed on the same side of the common side as the given triangle is . A third class ( c ) is that which avoids reductio ad absurdum . Thus , instead of indirect proofs , Heron gives direct proofs ...
... triangle which is constructed to be constructed on the same side of the common side as the given triangle is . A third class ( c ) is that which avoids reductio ad absurdum . Thus , instead of indirect proofs , Heron gives direct proofs ...
Side 126
... triangle , this is a problem ; for it is possible also to construct one which is not equi- lateral . But , when any ... triangle has two sides ( together ) greater than the remaining side and In any isosceles triangle the angles at the ...
... triangle , this is a problem ; for it is possible also to construct one which is not equi- lateral . But , when any ... triangle has two sides ( together ) greater than the remaining side and In any isosceles triangle the angles at the ...
Side 130
... triangle having each of the equal angles double of the remaining angle , but ( simply ) that we are to find such a triangle .... When , then , the enuncia- tion contains both ( what is given and what is sought ) , in that case we find ...
... triangle having each of the equal angles double of the remaining angle , but ( simply ) that we are to find such a triangle .... When , then , the enuncia- tion contains both ( what is given and what is sought ) , in that case we find ...
Side 154
... triangle is that which has its three sides equal , an isosceles triangle that which has two of its sides alone equal , and a scalene triangle that which has its three sides unequal . 21. Further , of trilateral figures , a right ...
... triangle is that which has its three sides equal , an isosceles triangle that which has two of its sides alone equal , and a scalene triangle that which has its three sides unequal . 21. Further , of trilateral figures , a right ...
Side 175
... triangle , beginning with a triangle as a mere three - side ( trilatero ) , i.e. a frame , as it were . His postulate relates to the three - side and is to the effect that each " ( rectilineal ) segment " joining a vertex to a point of ...
... triangle , beginning with a triangle as a mere three - side ( trilatero ) , i.e. a frame , as it were . His postulate relates to the three - side and is to the effect that each " ( rectilineal ) segment " joining a vertex to a point of ...
Vanlige uttrykk og setninger
angle ABC angle ACB angle BAC angles equal Apastamba Apollonius Arabic Archimedes Aristotle assumed axiom base BC bisects Book Campanus centre circle circumference coincide commentary Common Notion congruent construction contained definition diameter drawn edition Elements enunciation equal angles equal sides equal to AC Eucl Euclid Euclid's Elements Eudemus Eutocius exterior angle figure Fihrist follows Geminus geometry given straight line gives gnomon greater Greek Heiberg Heron hypothesis ibid interpolated isosceles triangle joined lemma length less Let ABC magnitude means meet method observed Pappus parallel parallelogram passage perpendicular plane Plato porism Posidonius postulate problem Proclus produced proposition proved Pythagoras Pythagorean Pythagorean theorem quoted rectangle reductio ad absurdum reference remaining angles respectively right angles right-angled triangle says Schol scholia segment semicircle Simplicius Simson square suppose surface Theon Theonine MSS theorem things translation triangle ABC words καὶ τὸ
Populære avsnitt
Side 322 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Side 204 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Side 259 - If two triangles have two sides of the one equal to two sides of the...
Side 188 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Side 204 - In any triangle, the sum of the three angles is equal to two right angles, or 180°.
Side 162 - A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line.
Side 167 - When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to that on which it stands.
Side 257 - Through a given point to draw a straight line parallel to a given straight line, Let A be the given point, and BC the given straight line : it is required to draw through the point A a straight line parallel to BC.
Side 176 - Parallel straight lines are straight lines which, being in the same plane and being produced indefinitely in both directions, do not meet one another in either direction.
Side 235 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of' the base, equal to one another, and likewise those which are terminated in the other extremity.