. The Decorator's assistant. headMountain, Anglesea; the Holland Slate Quar-ries, in Merionethshire; and at the Pennants Slate Quarries, Penrhyn,and the results show that the saving by the useof gun cotton is at least thirty per cent.; addedto which the greater advantage, that theminers, by its means, are enabled to obtain themost enormous blocks, and this with little orno waste. THE decorators ASSISTANT. 27 DEFINITIONS OF PRACTICAL GEOMETRY. (Continued from page 22,) 34. A triangle which has an obtuse angle, iscalled an obtuse-angled, or ainbliyo7ial, triangle,as D E F. its sides

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. The Decorator's assistant. headMountain, Anglesea; the Holland Slate Quar-ries, in Merionethshire; and at the Pennants Slate Quarries, Penrhyn,and the results show that the saving by the useof gun cotton is at least thirty per cent.; addedto which the greater advantage, that theminers, by its means, are enabled to obtain themost enormous blocks, and this with little orno waste. THE decorators ASSISTANT. 27 DEFINITIONS OF PRACTICAL GEOMETRY. (Continued from page 22,) 34. A triangle which has an obtuse angle, iscalled an obtuse-angled, or ainbliyo7ial, triangle,as D E F. its sides equal, and all its angles right angle. 35. A triangle which has all its angles acute,is called an acute-angled, or oxigonal, triangle, ABC

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Keywords: ., bookcentury180, booksubjectart, booksubjectdecorationandornament