 | Peter Guthrie Tait - 1867 - 354 sivua
...equal and parallel lines are themselves equal and parallel. (Euclid, I. xxxiii.) 2. Find the vector of the middle point of the line which joins the middle points of the diagonals of any quadrilateral, plane or gauche, the vectors of the corners being given ; and so... | |
 | Peter Guthrie Tait - 1867 - 364 sivua
...equal and parallel lines are themselves equal and parallel. (Euclid, I. xxxiii.) 2. Find the vector of the middle point of the line which joins the middle points of the diagonals of any quadrilateral, plane or gauche, the vectors of the corners being given; and so... | |
 | Queen's University (Kingston, Ont.) - 1899 - 920 sivua
...represented by 4 lines OA, OB, ОС, OD ; shew that their resultant is represented by 40G, G being the middle point of the line which joins the middle points of AC and BD. Queen'-ч University Examinations: April, 1900. PASS. Senior Physics. Dynamics, Electricity,... | |
 | Joseph George Coffin - 1911 - 296 sivua
...the line which joins the middle points of the diagonals. Find the middle point of the line joining the middle points of two opposite sides. Show that...masses placed at the vertices of the quadrilateral. 21. Discuss the conditions imposed upon three, four, or five vectors if they satisfy two equations,... | |
 | Joseph George Coffin - 1911 - 296 sivua
...sides are equal and parallel to the medians of any given triangle. 20. Given a quadrilateral in space. Find the middle point of the line which joins the middle points of the diagonals. Find the middle point of the line joining the middle points of two opposite sides. Show... | |
 | Peter Guthrie Tait - 2018 - 462 sivua
...equal and parallel lines are themselves equal and parallel. (Euclid, I. xxxiii.) 2. Find the vector of the middle point of the line which joins the middle points of the diagonals of any quadrilateral, plane or gauche, the vectors of the corners being given ; and so... | |
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... and surfaces of the second and third orders are also there founded upon the composition of vectors. EXAMPLES TO CHAPTER I. 1. The lines which join, towards the same parts, the extremities of two equal and parallel lines are themselves equal and parallel.... 