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Βιβλία Βιβλία 21 - 30 από 118 για Jf a straight line fall upon two parallel straight lines, it makes the alternate....
" Jf a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite upon the same side ; and likewise the two interior angles upon the same side together... "
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... - Σελίδα 36
των John William Norie, J. W. Saul - 1917 - 595 σελίδες
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Elements of Plane Geometry According to Euclid

Andrew Bell - 1837 - 240 σελίδες
...is equal to the base DF, and the third angle BAG to the third angle EDF. PROPOSITION XXVII. THEOREM. If a straight line falling upon two other straight lines makes the alternate angles equal to one another, these two straight lines shall he parallel. Let the straight...

A companion to Euclid: being a help to the understanding and remembering of ...

Euclides - 1837
...EF, 3. prove that AC = DF, and Z BAC — Z EDF. PROPOSITION XXVII. (Argument ad absurdum). Theorem. If a straight line falling upon two other straight lines makes the al- / ternate angles equal to one ^jf- — __ — ___ another, these two straight / ~""G lines shaU...

Elements of Geometry: Containing the First Six Books of Euclid : with a ...

John Playfair - 1837 - 318 σελίδες
...base AC is equal to the base DF, and the third angle BAC to the third angle EDF. PROP. XXVII. THEOR. If a straight line falling upon two other straight lines makes the alternate angles equal to one another, these two straight lines are parallel. Let the straight line...

The Elements of Euclid

Euclid - 1838 - 416 σελίδες
...third angle BAC to the third angle EDF. Therefore, if two triangles, &c. Q,. ED PROP. XXVII. THEOR. IF a straight line falling upon two other straight lines makes the alternate angles equal to one another, these two straight lines shall be parallel. Let the straight...

The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841
...line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon the same side; and likewise the two interior angles upon the same side together equal to two right angles. Let the...

Chambers's Information for the People, Τόμος 2

William Chambers, Robert Chambers - 1842
...line fall upon two parallel straight lines, it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite upon the same side ; and likewise the two interior angles upon the same side together equal to two right angles. Now,...

Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842
...the third angle BAC to the third angle EDF. Therefore, if two triangles, &c. QED PROP. XXVII. THEOR. IF a straight line falling upon two other straight lines makes the alternate angles equal to one another, these two straight lines shall be parallel. Let the straight...

Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1842 - 317 σελίδες
...base AC is equal to the base DF, and the third angle BAC to the third angle EDF. PROP. XXVII. THEOR. If a straight line falling upon two other straight lines makes the alternate angles equal to one another, these two straight lines are parallel. Let the straight line...

Chambers's information for the people, ed. by W. and R. Chambers

Chambers W. and R., ltd - 1842
...to parallel lines are very simple and easily demonstrated ; for the 27th theorem only affirms, that if a straight line falling upon two other straight lines makes the alternate angles equal to one another, these two straight lines shall be parallel. The 28th theorem...

The British Annals of Education for ...: Being The Scholastic ..., Τόμος 1

1844
...vertical angles shall be equal. 4. If a straight line, falling upon two other straight lines, make the exterior angle equal to the interior and opposite upon the same side of the line, or make the interior angles on the same side together equal to two right angles, the two straight lines...




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