A Manual of Greek MathematicsClarendon Press, 1931 - 552 pagina's |
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Pagina 87
... perpendicular from a vertex to the opposite side . B D Thus , if , in the triangle ABC , AD is perpendicular to BC , the sum of all the angles of the two right - angled triangles ABD , ADC is known to be four right angles . Now the ...
... perpendicular from a vertex to the opposite side . B D Thus , if , in the triangle ABC , AD is perpendicular to BC , the sum of all the angles of the two right - angled triangles ABD , ADC is known to be four right angles . Now the ...
Pagina 420
... perpendicular is drawn from a vertex ( A ) to the opposite side ( BC ) , and the theorems of Eucl . II . 12 and 13 are used in order to find the lengths of the segments into which BC is divided by the perpendicular AD . The length of ...
... perpendicular is drawn from a vertex ( A ) to the opposite side ( BC ) , and the theorems of Eucl . II . 12 and 13 are used in order to find the lengths of the segments into which BC is divided by the perpendicular AD . The length of ...
Pagina 451
... perpendicular to the plane , and if from B , the foot of the perpendicular , a straight line BD be drawn perpendicular to EF , any straight line in the plane , then will AD also be perpendicular to EF . ( 2 ) If , from a point A above a ...
... perpendicular to the plane , and if from B , the foot of the perpendicular , a straight line BD be drawn perpendicular to EF , any straight line in the plane , then will AD also be perpendicular to EF . ( 2 ) If , from a point A above a ...
Inhoudsopgave
INTRODUCTORY 1 157 | 1 |
NUMERICAL NOTATION AND PRACTICAL CAL | 11 |
PYTHAGOREAN ARITHMETIC | 36 |
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