Elements of Geometry: With Practical Applications Designed for BeginnersD. Appleton, 1853 - 320 σελίδες |
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Σελίδα 8
... formed upon plane surfaces by stretching upon the surface a flexible cord , previously rubbed over with chalk . The middle portion of the cord is then raised , and allowed to recoil by its elasticity , 8 ELEMENTS OF GEOMETRY .
... formed upon plane surfaces by stretching upon the surface a flexible cord , previously rubbed over with chalk . The middle portion of the cord is then raised , and allowed to recoil by its elasticity , 8 ELEMENTS OF GEOMETRY .
Σελίδα 9
... plane , testing his work by sighting along the edge with the eye . Then , as a more accurate test , he applies the two edges together , moving the one lengthwise upon the other ; then reversing the ends , he again applies them , and ...
... plane , testing his work by sighting along the edge with the eye . Then , as a more accurate test , he applies the two edges together , moving the one lengthwise upon the other ; then reversing the ends , he again applies them , and ...
Σελίδα 10
... plane surface , or simply a plane , is a surface , in which , if two points be taken at pleasure , and con- nected by a straight line , that line will be wholly in the surface . ( 11. ) A practical test , in accordance with this ...
... plane surface , or simply a plane , is a surface , in which , if two points be taken at pleasure , and con- nected by a straight line , that line will be wholly in the surface . ( 11. ) A practical test , in accordance with this ...
Σελίδα 11
... plane . IX . When two straight lines AB , AC , meet each other , the space in- cluded between the lines is called an angle . The point of intersection A , is the vertex of the angle ; and the lines AB , AC are the sides of the an- gle ...
... plane . IX . When two straight lines AB , AC , meet each other , the space in- cluded between the lines is called an angle . The point of intersection A , is the vertex of the angle ; and the lines AB , AC are the sides of the an- gle ...
Σελίδα 12
... plane about B , so as to take the successive positions A1B , A , B , AзB , A4B , & c . , until it has made a complete revolution and return- ed to its first position , then will this complete revolution have caused the line AB to pass ...
... plane about B , so as to take the successive positions A1B , A , B , AзB , A4B , & c . , until it has made a complete revolution and return- ed to its first position , then will this complete revolution have caused the line AB to pass ...
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Elements of Geometry With Practical Applications George R Perkins Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2023 |
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a+b+c altitude angle ABC angle ACD angle BAC bisect centre chord circ circular sector circumference circumscribed polygon coincide cone consequently convex surface cylinder diagonal diameter distance draw equal and parallel equiangular equilateral triangle equivalent exterior angle ference figure formed given line greater half the arc hypothenuse inscribed circle intersection isosceles join less Let ABC line CD lines drawn magnitude measured by half meet multiplied number of sides opposite angles parallel lines parallelogram parallelopipedon pendicular perimeter perpen perpendicular plane MN point G prism PROBLEM produced Prop proportional PROPOSITION pyramid radii radius rectangle regular polygon respectively equal right-angled triangle Sabc Schol Scholium scribed semicircle semicircumference side AC similar solid angle sphere spherical polygon square straight line suppose tangent THEOREM three sides triangle ABC triangular prism vertex VIII