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If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
The Elements of Geometry, Symbolically Arranged - Page 21
by Great Britain. Admiralty - 1846

## Horses, Horsemen and Stable-management

Godfrey Bosvile - Horsemanship - 1908 - 316 pages
...adopt them ; but in no case may algebraical symbols, such as the minus sign, and AJP, be used.] 1. If, at a point in a straight line, two other straight lines, on opposite sides of it, make the adjacent angles together equal to two right angles, then these two...

## Intermediate Geometry: Being Sections V and VI of "geometry, Theoretical and ...

Walter Percy Workman - Geometry - 1908 - 228 pages
...another straight line on one side of it are together equal to two right angles (Euc. I. 13) 83 A.1c. — If at a point in a straight line, two other straight lines on opposite sides of it make the adjacent angles together equal to two right angles, these two straight...

## Report of the Examinations Conducted by the Council of Higher Education ...

Newfoundland Council of Higher Education - 1912 - 296 pages
...line perpendicular to a given straight line of unlimited length from a given point without it. A 4. If, at a point in a straight line, two other straight lines, on opposite sides of it, make the adjacent angles together equal to two right angles, then these two...

## Report of the Examinations Conducted by the Council of Higher Education ...

Newfoundland Council of Higher Education - 1913 - 228 pages
...CD subtend equal angles at O. (6) 5. If, at a point in a straight line, two other straight lines on the opposite sides of it make the adjacent angles together equal to two right angles, prove that the two straight lines must be in one and the same straight line. On the opposite sides...

## Journal of Education

Education - 1914 - 914 pages
...soldiers are angry (xoXorotVai) at the generals. GEOMETRY.— X. 9 to 11 am, Wednesday, 24 June, 1914. 1. If at a point in a straight line, two other straight lines, on opposite side* of it, make the adjacent angles together, equal to two right angles, then these two...

## The Irish Law Times and Solicitors' Journal, Volume 37

Law - 1903 - 960 pages
...non-adjacent angles. 1. Prove that, it at a point in a right liiic, two other right lines on opposite sides make the adjacent angles together equal to two right angles, these two right lines form one continuous rignt line. 3. If a parallelogram and a triangle be on the same base...

## Logic from a Rhetorical Point of View

Witold Marciszewski - LANGUAGE ARTS & DISCIPLINES - 1994 - 340 pages
...formulation of general theorems in the example of Euclid's Theorem 14 of Book I. It runs as follows: If, at a point in a straight line, two other straight lines, on the opposite sides of it, make the adjacent angles together equal to two right angles, these two...

## Annual Report of the Public Schools of the Province of British Columbia

British Columbia. Superintendent of Education - 1897 - 710 pages
...kind ? 7. The sum of a certain number and its square root is 90. What is the number? GEOMETRY. 1. (a.) If, at a point in a straight line, two other straight...equal to two right angles, these two straight lines must be in one and the same straight line. (b.) Give the enunciations of propositions that prove the...