| Cowley Oxon, dioc. school - 1860 - 318 pages
...right-angled triangle juto three other triangles — two isosceles, and the third scalene. 5. If one **side of a triangle be produced, the exterior angle is equal to the** two interior and opposite angles, and the three in. terior anglesof any triangle are together equal... | |
| Great Britain. Parliament. House of Commons - Great Britain - 1878 - 634 pages
...GEOMETRY, ALGEBRA, AND TRIGONOMETRY. Time allowed, 4 hours. [Tables of Logarithnu were supplied."] If a **side of a triangle be produced the exterior angle is equal to the** two interior and opposite angles, and the three interior angles are together equal to two right angles.... | |
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