Elements of GeometryGinn and Heath, 1881 - 250 σελίδες |
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Σελίδα iii
... direction , which every child derives from observation ; but it is believed that these notions have been limited and defined with mathematical precision : A few symbols , which stand for words and not for operations , have been used ...
... direction , which every child derives from observation ; but it is believed that these notions have been limited and defined with mathematical precision : A few symbols , which stand for words and not for operations , have been used ...
Σελίδα iv
... direction in the construc- tions of the figures , begins a new line ; and in no case is it neces- sary to turn the paye in reading a demonstration . This arrangement presents obvious advantages . The pupil perceives at once what is ...
... direction in the construc- tions of the figures , begins a new line ; and in no case is it neces- sary to turn the paye in reading a demonstration . This arrangement presents obvious advantages . The pupil perceives at once what is ...
Σελίδα 4
... situation of the two points A and H involves three , and only three , independent elements . To pass from A to H it is necessary to move East ( if we suppose the direction A E to be due East ) a distance equal to A E 4-5-6 DEFINITIONS.
... situation of the two points A and H involves three , and only three , independent elements . To pass from A to H it is necessary to move East ( if we suppose the direction A E to be due East ) a distance equal to A E 4-5-6 DEFINITIONS.
Σελίδα 5
... direction throughout its whole extent . 9. DEF . A Curved line is a line which changes its direction at every point . 10. DEF . A Broken line is a series of con- nected straight lines . When the word line is used a straight line is ...
... direction throughout its whole extent . 9. DEF . A Curved line is a line which changes its direction at every point . 10. DEF . A Broken line is a series of con- nected straight lines . When the word line is used a straight line is ...
Σελίδα 6
... direction and one of its points be known . Hence , all straight lines which pass through the same point in the same direction coincide . Between two points one , and but one , straight line can be drawn ; that is , a straight line is ...
... direction and one of its points be known . Hence , all straight lines which pass through the same point in the same direction coincide . Between two points one , and but one , straight line can be drawn ; that is , a straight line is ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
A B C AABC AACB ABCD acute adjacent angles alt.-int altitude apothem arc A B BC² bisect centre chord A B circumference circumscribed coincide COROLLARY describe an arc diagonals diameter divided Draw equal arcs equal distances equal respectively equiangular polygon equilateral equilateral polygon equivalent exterior angles figure given line given point given polygon greater homologous sides hypotenuse Iden isosceles triangle Let A B limit line A B measured by arc middle point number of sides parallelogram perimeter perpendicular plane PROBLEM prove Q. E. D. PROPOSITION quadrilateral radii radius equal ratio rect rectangles regular inscribed regular polygon required to construct rhombus right angles right triangle SCHOLIUM segment sides of equal sides of similar similar polygons subtend tangent THEOREM third side triangle ABC variable vertex vertices