 | Sterling Andrus Leonard, Riah Fagan Cox - 1925 - عدد الصفحات: 296
...will interest you most. 3. If two angles not in the same plane have their sides parallel and extending in the same direction, they are equal, and their planes are parallel. 4. When you are in Paris, miss, if you must, Notre Dame, neglect the Louvre, let the gardens at Versailles... | |
 | National Committee on Mathematical Requirements - 1927 - عدد الصفحات: 208
...If two parallel planes are cut by a third plane, the lines of intersection are parallel. [17, cd] 9. If two angles not in the same plane have their sides respectively parallel in the same sense, they are equal and their planes are parallel. [21*, cd*] 10. If two planes are perpendicular... | |
 | 1930 - عدد الصفحات: 18
[ عذرًا، محتوى هذه الصفحة مقيَّد ] | |
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If two angles, not in the same plane, have their sides respectively parallel and lying in the same direction, they are equal and their planes are parallel. Let BA C,B'A... 
