 | Edward Albert Bowser - 1890 - 418 páginas
...(Ax. 3) And these being alternate Z s, . • . AB || to CD. (75) QED Proposition 1 6. Theorem. 79. Straight lines which are parallel to the same straight line are parallel to one another. Hyp. Let the st. lines AB, CD A EX- B be each || to the st. line PQ. ^ /- ^ To prove AB || to CD. -r... | |
 | Euclid - 1890 - 442 páginas
...+ BSR = ASR + BSR, = two rt. A 8. AA Similarly SRC + ASR = two rt. A". Proposition 30. THEOREM — Straight lines which are parallel to the same straight line are parallel to each otfier. Let st. lines AB, CD be each || to PQ. Draw XY across them, meeting AB, PQ, CD in _ f... | |
 | Rupert Deakin - 1891 - 102 páginas
...same side ; and also the two interior angles on the same side together equal to two right angles. 30. Straight lines which are parallel to the same straight line are parallel to one another. 31. To draw a straight line through a given point parallel to a given straight line. 32. If a side... | |
 | James Andrew Blaikie, William Thomson - 1891 - 154 páginas
...the two interior angles on the same side of the cutting line together equal to two right angles. 30. Straight lines which are parallel to the same straight line are parallel to each other. 31. Through a given point, to draw a straight line parallel to a given straight line. 32.... | |
 | 1893 - 892 páginas
[ Lo sentimos, el contenido de esta página está restringido. ] | |
 | William James Milne - 1899 - 398 páginas
...the given line. In what direction do these two lines extend with reference to each other? Theorem. Straight lines which are parallel to the same straight line are parallel to each other. ' Data: Any straight lines, as AB A (75 B and CD, each parallel to another c /' D straight... | |
 | Seymour Eaton - 1899 - 362 páginas
...perpendicular lines drawn to parallel lines are themselves parallel. Lesson No. 15 PROPOSITION 30. THEOREM Straight lines which are parallel to the same straight line are parallel to each other. Let AB and CD be each of them parallel to EF; then AB shall be parallel to CD. Proof: Because... | |
 | William James Milne - 1899 - 258 páginas
...the given line. In what direction do these two lines extend with reference to each other ? Theorem. Straight lines which are parallel to the same straight line are parallel to each other. Data: Any straight lines, as AB A and CD, each parallel to another c straight line, as... | |
 | Euclid, Henry Sinclair Hall, Frederick Haller Stevens - 1900 - 330 páginas
...Propositions, dealing with parallel straight lines, depends on Axiom 12 ? Furnish an alternative proof. 3. Straight lines which are parallel to the same straight line are parallel to one another [Prop. 30]. Deduce this from Playfair's Axiom. 4. Define a parallelogram, an altitude of a triangle,... | |
 | 1901 - 548 páginas
...angle and name the different kinds of angles. Describe an ancle equal to a givtn angle. (4) S' might lines which are parallel to the same straight line are parallel to one another. Two straight lines are drawn parallel to the base of an isosceles triangle ; show that the segments... | |
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Straight lines which are parallel to the same straight line are parallel to one another. Triangles and Rectilinear Figures. The sum of the angles of a triangle is equal to two right angles. 
