 | 130 pages
...quadrilateral is a straight line joining a pair of opposite angular points. A square is a quadrilateral which has all its sides equal and all its angles right angles (6)*. DEF. 9. A rhombus is a quadrilateral which has all its sides equal and its angles not right angles... | |
 | Euclid - 1845 - 328 pages
...noticed that the letters denoting a quadrilateral should be given in order.) A square is a quadrilateral which has all its sides equal and all its angles right angles (ii)*. DBF. 14. A rhombus is a quadrilateral which has all its sides equal and its angles not right... | |
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An oblong is that which has all its angles right angles, but has not all its sides equal. 
