 If a straight line stand at right angles to each of two straight lines in the point of their intersection, it will also be at right angles to the plane in which these lines are.  An elementary course of mathematics - Side 5av Samuel Hunter Christie - 1847Uten tilgangsbegrensning - Om denne boken
 | Canada. Department of the Interior - 1888 - 756 sider
...solid angle be contained by three plane angles, any two of these angles are greater than the third. 4. If a straight line stand at right angles to each of...straight lines in the point of their intersection it will also be at right angles to the plane in which these lines are. -6. How many yards of cloth are... | |
 | University of St. Andrews - 1898 - 610 sider
...prove that AB: AC::BD:BC. 5. If a straight line stand at right angles to each of two straight lines, at the point of their intersection, it shall also be at right angles to the plane in which they are. From a point P a perpendicular is drawn to a plane, meeting it at Q, and from Q... | |
 | 1871 - 280 sider
...are the middle points of the sides and A,B,C the intersections of opposite sides. EUCLID XI., &c. I. If a straight line stand at right angles to each of two straight lines at the point of their intersection, it shall also be at right angUs to the plane which passes through... | |
 | University of St. Andrews - 1900 - 670 sider
...How can the fourth point of a harmonic range be found, when three points of the range are given ? 6. If a straight line stand at right angles to each of two straight lines at the point of their intersection, it shall also be at right angles to their plane. The sum of the... | |
 | University of Cambridge - 1810 - 324 sider
...both by vulgar fractions and by decimals. 2. Prove, that if a straight line stand at right arigles to each of two straight lines in the point of their intersection, it .will be at right angles to the plane that passes through them. 3. Define a Rhombus ; and prove that... | |
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