 | John Keill - 1723 - 444 sider
...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 - 462 sider
...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 Bonnycastle - 1806 - 464 sider
...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 heights and distances may... | |
 | Robert Simson - 1806 - 546 sider
...another: then, if the 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 See N. sides of a triangle, it shall cut the other sides, or those produced, proportionally: and if... | |
 | John Mason Good - 1813 - 714 sider
...I. Tin or. 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,... | |
 | John Playfair - 1819 - 354 sider
...another. Then, i aame construction be made as in the proposition, the demonstratiofi will be the same. PROP. II. THEOR. If a straight line be drawn parallel to one of the sides of a triangle, it will tut the otlter sides, or the other sides produced, proportionally : And if the sides, or the sides... | |
 | Miles Bland - 1819 - 444 sider
...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... | |
 | Miles Bland - 1819 - 442 sider
...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... | |
 | Euclid, Robert Simson - 1821 - 514 sider
...construction be made as in the proposition, the demonstration will be the same. PROP. II. THEOR. x IF a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those produced, proportionally; and if the sides, or the sides produced,... | |
 | Euclid - 1826 - 234 sider
...lines be proportional, their squares shall also be proportional. PROPOSITION II. THEOREM. If a, right line be drawn parallel to one of the sides of a triangle, it shall cut the sides of the triangle proportionally ; and if the sides of a triangle be cut proportionally,... | |
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IF a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those produced, proportionally ; and if the sides, or the sides produced, be cut proportionally, the straight line which joins the points of section... 
