## Euclidian Geometry |

### From inside the book

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**RIGHT ANGLES**. DEFINITION . When one straight line , STRAIGHT LINES , ANGLES AND TRIANGLES . 13 PROBLEM C. ... Page 14

Francis Cuthbertson (M.A.).

Francis Cuthbertson (M.A.).

**RIGHT ANGLES**. DEFINITION . When one straight line , standing on another straight line , makes the adjacent angles equal to one another , each of them is called a**right angle**; and the straight line which ... Page 15

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**angles**. = .. if an**angle**one of its adjacent**angles**it is also the other , ..if one straight line is to another , the latter is to the former . Thus each of the arms of a**right**is 1 to the other . PROPOSITION VII . It is always ... Page 16

... . · DA is = EA , DF = EF , and AF common to the two AS DAF , EAF , .. these as are equal in all respects ; .. L DAF is = LEAF , .. AF is to BC . ( I. 5 ) ( Def . ) PROPOSITION VIII . From a given point in a given 16

... . · DA is = EA , DF = EF , and AF common to the two AS DAF , EAF , .. these as are equal in all respects ; .. L DAF is = LEAF , .. AF is to BC . ( I. 5 ) ( Def . ) PROPOSITION VIII . From a given point in a given 16

**RIGHT ANGLES**. Page 17

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**right angles**are equal to one another . B CH K Let ABC , GHK be two**right angles**, and let the ABC be applied to the GHK , so that B may fall on H , and BC along HK , then will BA fall along HG . For if it fell in any other direction ...### Other editions - View all

### Common terms and phrases

applied base bisect Cambridge centre chapter chord circle circumference cloth College common complete contained Crown 8vo DEFINITION describe diameter difference divided double draw drawn Edition elementary English equal equiangular Examination Examples extremities fall fcap figure Find former four GEOMETRY given point given straight line Grammar greater Hence illustrations impossible inscribed introduction Join language Latin less magnitudes Master Mathematical meet method Notes opposite parallel parallelogram pass perpendicular plane polygon possible present principles PROBLEM produced Professor proportional PROPOSITION prove ratio reader rect rectangle rectilineal respectively revised right angles Schools Second Edition segment selected sides similar Similarly square taken tangent THEOREM third touch TREATISE triangle twice University volume whole