 | Euclides - 1846 - عدد الصفحات: 292
...parallels, and joined towards the same parts by the straight lines BE, CH : But straight B OF o lines which join the extremities of two equal and parallel straight lines towards the same parts, are themselves equal and parallel (1. 33) ; therefore EB, CH are both equal and parallel, and EBCH is a... | |
 | Euclides - 1847 - عدد الصفحات: 128
...rt. /'. Wherefore, if the sides &c. — QED ' PROP. XXXIII. THEOR. GEN. ENUN. — The straight lines, which join the extremities of two equal and parallel straight lines towards the same parts, are themselves also equal and parallel. PAKT. ENUN. — Let AB, CD be = and || st. lines, and let them... | |
 | Euclides - 1848 - عدد الصفحات: 52
...same direction, are together equal to four right angles. PROP. XXXIII. THEOREM. The straight lines which join the extremities of two equal and parallel...same parts, are also themselves equal and parallel. PROP. XXXIV. THEOREM. The opposite sides and angles of parallelograms are equal to one another, and... | |
 | Euclid, Thomas Tate - 1849 - عدد الصفحات: 120
...therefore all the exterior angles are equal to four right angles. PROP. XXXIII. THEOR. The straight lines which join the extremities of two equal and parallel...and joined towards the same parts by the straight AB lines AC, BD; AC, BD are also equal and r parallel. \ Join BC ; and because AB is parallel to \---''''... | |
 | John Playfair - 1849 - عدد الصفحات: 332
...cannot meet the contour of the polygon in more than two points. PROP. XXXIII. THEOR. The straight lines which join the extremities of two equal and parallel...themselves equal and parallel. Let AB, CD, be equal and parallel'straight lines, and joined towards the same parts by the straight lines AC, BD; AC, BD are... | |
 | 1851 - عدد الصفحات: 590
...of the next theorem. The theorem is that of Euclid, " Straight lines which join the extremities of equal and parallel straight lines towards the same parts, are also themselves equal and parallel ;" and the corollary is, " It is also plain that the opposite sides of a parallelogram are equal, for... | |
 | 1851 - عدد الصفحات: 580
...ot the next theorem. The theorem is that of Euclid, " Straight lines which join the extremities of equal and parallel straight lines towards the same parts, are also themselves equal and parallel ;" and the corollary is, " It is also plain that the opposite sides of a parallelogram are equal, for... | |
 | London univ - 1852 - عدد الصفحات: 358
...than the other two sides of the triangle, but shall contain a greater angle. 6. The straight lines which join the extremities of two equal and parallel...same parts, are also themselves equal and parallel. 7. Show that if from the right angle of a right-angled triangle two straight lines be drawn, one perpendicular... | |
 | Euclides - 1852 - عدد الصفحات: 152
...advantageously illustrated in the triangle and the square.] BOOK I. PROP. XXXHI. THEOR. The straight lines which join the extremities of two equal and parallel...towards the same parts, are also themselves equal (1.) and (2.) parallel. Let AB, CD be equal and parallel straight lines, and joined towards the same... | |
 | Euclides - 1853 - عدد الصفحات: 146
...all the exterior angles are equal to four right angles. PROP. XXXIII. — THEOREM. The straight lines which join the extremities of two equal and parallel...towards the same parts by the straight lines AC, BD; AC, BD, are also equal and parallel. AB c Join BC; and because AB is parallel to CD, and BC meets them,... | |
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THE straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel. 
