| Walter Percy Workman - 1908
...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... | |
| 1903
...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... | |
| Witold Marciszewski - 1994 - 312 sider
...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... | |
| British Columbia. Superintendent of Education - 1897
...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... | |
| Great Britain. Parliament. House of Commons - 1852
...SECTION I. 1. If at a point in a given straight line, two other straight lines on the opposite side **of it make the adjacent angles together equal to two right angles, these** straight lines are in one and the same straight line. 2. To describe a square which shall be equal... | |
| Euclid - 1845 - 262 sider
...quadrilateral such that BC = AD and AC = BD ; if AC, BD meet in O, show that OA = OB. 39. PROP. 1 2. **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, those two straight... | |
| ...circle centre O, and D is the mid-point of AB ; show that OD is perpendicular to BC. 25. PROP. 12. **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, those two straight... | |
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