 | Percey Franklyn Smith, Arthur Sullivan Gale - 1904 - 462 páginas
...each other. 11. Prove that the diagonals of any parallelogram mutually bisect each other. . 12. Show that the lines joining the middle points of the opposite sides of the quadrilateral whose vertices are (6, 8), (— 4, 0), (— 2, — 6), (4, — 4) bisect each other.... | |
 | Levi Leonard Conant - 1905 - 154 páginas
...opposite leg forms with the base an angle equal to half the vertical angle of the triangle. 65. Each of the lines joining the middle points of the opposite sides of a quadrilateral bisects the line joining the middle points of the diagonals of the quadrilateral. HINT. The line joining... | |
 | Percey Franklyn Smith, Arthur Sullivan Gale - 1905 - 240 páginas
...each other. 11. Prove that the diagonals of any parallelogram mutually bisect each other. 12. Show that the lines joining the middle points of the opposite sides of the quadrilateral whose vertices are (0, 8), (— 4, 0), (- 2, — 0), (4, - 4) bisect each other.... | |
 | Thomas Wallace Wright - 1906 - 418 páginas
...portions of the CG found must coincide.] 40J. The median lines of a triangle pass through one point. 40c. The lines joining the middle points of the opposite sides of a quadrilateral bisect each other. 41. Explain the positions of force, resistance, and fulcrum in the following levers:... | |
 | Alexander H. McDougall - 1910 - 316 páginas
...sides of a quadrilateral and the middle points of the diagonals are the vertices of a ||gm. 31. The st. lines joining the middle points of the opposite sides of a quadrilateral and the st. line joining the middle points of the diagonals are concurrent. THEORETICAL GEOMETRY THEOREM 21... | |
 | Percey Franklyn Smith, William Anthony Granville - 1910 - 250 páginas
...each other. 30. Prove that the diagonals of any parallelogram mutually bisect each other. 31. Show that the lines joining the middle points of the opposite sides of the quadrilateral whose vertices are (G, 8), (— 4, 0), (- 2, - 6), (4, — 4) bisect each other.... | |
 | Percey Franklyn Smith, Arthur Sullivan Gale - 1912 - 364 páginas
...11) bisect each other. 11. Prove that the diagonals of any parallelogram bisect each other. 12. Show that the lines joining the middle points of the opposite sides of the quadrilateral whose vertices are (6, 8), (— 4, 0), (— 2, — 6), (4,— 4) bisect each other.... | |
 | Walter Burton Ford, Earle Raymond Hedrick - 1913 - 272 páginas
...Compare their areas. Does the area of the parallelogram depend upon the angles included by its sides ? 3. Prove that the lines joining the middle points of the opposite sides of a parallelogram divide it into four parallelograms that are equal in area. 4. Construct a parallelogram... | |
 | Walter Burton Ford, Charles Ammerman - 1913 - 378 páginas
...Compare their areas. Does the area of the parallelogram depend upon the angles included by its sides ? 3. Prove that the lines joining the middle points of the opposite sides of a parallelogram divide it into four parallelograms that are equal in area (not necessarily congruent).... | |
 | Webster Wells, Walter Wilson Hart - 1915 - 330 páginas
...a parallelogram. Suggestion. — Recall § 151. Ex. 72. Prove that the lines joining the mid-points of the opposite sides of a quadrilateral and the line joining the mid-points of the diagonals of the quadrilateral meet in a point. Suggestion. — Recall Ex. 71. Ex.... | |
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The lines joining the middle points of the opposite sides of a quadrilateral bisect each other. 
