Elements of GeometryGinn and Heath, 1881 - 250 σελίδες |
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Σελίδα 3
... straight - edge is applied to any one of them , the straight - edge in every part will touch the surface , the surfaces are called Plane Surfaces . The sharp edge in which any two of these surfaces meet is called a Line ... lines meet is ...
... straight - edge is applied to any one of them , the straight - edge in every part will touch the surface , the surfaces are called Plane Surfaces . The sharp edge in which any two of these surfaces meet is called a Line ... lines meet is ...
Σελίδα 5
... Straight line is a line which has the same 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 ...
... Straight line is a line which has the same 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 ...
Σελίδα 6
... STRAIGHT LINES . 18. If the direction of a straight line and a point in the line be known , the position of the line is known ; that is , a straight line is determined in position if its direction and one of its points be known . Hence , ...
... STRAIGHT LINES . 18. If the direction of a straight line and a point in the line be known , the position of the line is known ; that is , a straight line is determined in position if its direction and one of its points be known . Hence , ...
Σελίδα 7
... line , as CB , 4B , be produced through C , the portions C B and CA may be regarded as different lines having opposite directions from the point C. A Hence , every straight line ... straight lines which lie in the same plane DEFINITIONS . 7.
... line , as CB , 4B , be produced through C , the portions C B and CA may be regarded as different lines having opposite directions from the point C. A Hence , every straight line ... straight lines which lie in the same plane DEFINITIONS . 7.
Σελίδα 9
... straight lines which meet each other so that the two adjacent angles formed by producing one of the lines A through the vertex are equal . Thus if the straight line AB meet the straight line CD so that the adjacent angles ABC and ABD ...
... straight lines which meet each other so that the two adjacent angles formed by producing one of the lines A through the vertex are equal . Thus if the straight line AB meet the straight line CD so that the adjacent angles ABC and ABD ...
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