 | John Keill - 1723 - عدد الصفحات: 444
...are to each other a* -their Bafes; which was to be demonftrated. PROPOSITION II. THEOREM. If it Right Line be drawn parallel to one of the Sides of a "Triangle, it frail cut the Sides of the Triangle * proportionally ; and if the Sides of the Triangle be cut proportionally,... | |
 | John Keill - 1772 - عدد الصفحات: 462
...fameBafe, J are between the fame Parallels; therefoie DE is parallel to B C. Wherefore, if c Right Lint be drawn parallel to one of the Sides of a Triangle, it jhall cut the Si Jo of the Triangle proportionally ; and if the Sines cf the Triangle be cut proportionally,... | |
 | John Playfair - 1806 - عدد الصفحات: 320
...same construction be made as in the proposition, the demonstration will be the same. PROP. II. THEOR. IF a straight line be drawn parallel to one of the sides of a triangle, it will cut the other sides, or the other sides produced proportionally ; and if the sides, or the sides... | |
 | John Bonnycastle - 1806 - عدد الصفحات: 464
...semicircle, or that which stands upon half the circumference, is a right angle, or 90°. 8. If a right line be drawn parallel to one of the sides of a triangle, it will cut the other sides proportionally. It may also be remarked, that some of the simplest cases of... | |
 | John Mason Good - 1813 - عدد الصفحات: 714
...Triangles and parallelograms of the same altitude are one to another as their, basesProp. II. Theor. If a straight line be drawn parallel to one of the sides of a triangle, it shall cat the other sides, or those produced, proportionally: and if the sides, or the sides produced, be... | |
 | Euclides - 1814 - عدد الصفحات: 560
...another as their bases. PROP. II. THEOR. • IF a straight line be drawn parallel to one of the See N. sides of a triangle, it shall cut the other sides, or these produced,, proportionally : And if the sides, or the sides produced, be cut proportionally, the straight line which joins the points... | |
 | Euclides - 1816 - عدد الصفحات: 588
...demonstration will be the same. PROP. II. THEOR. •Ir a straight line be drawn parallel to one of the See.N. sides of a triangle, it shall cut the other sides, or these produced, proportionally : And if the sides, or the sides produced, be cut proportionally, the straight line which joins the points... | |
 | John Playfair - 1819 - عدد الصفحات: 350
...same construction be made as in the proposition, the demonstration will be the same. PROP. II. THEOR. If a straight line be drawn parallel to one of the sides of a triangle, it ' will cut the other sides, or the other sides produced, proportionally : And if the sides, or the... | |
 | Miles Bland - 1819 - عدد الصفحات: 442
...parallelogram to the extremities of two opposite sides, are together half of the parallelogram. 8. If a straight line be drawn parallel to one of the sides of a parallelogram, and one extremity of this line be joined to the opposite one of the parallel side, by... | |
 | Miles Bland - 1819 - عدد الصفحات: 444
...drawn through P parallel to AB or DC, it may be shewn that APE, DPC together are half of ABCD. (8.) If a straight line be drawn parallel to one of the sides of a parallelogram, and one extremity of this line be joined to the opposite one of the parallel side, by... | |
| |
If a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or these produced, proportionally : and if the sides, or the sides produced, be cut proportionally, the straight line which joins the points of section... 
