 | Euclid - Geometry - 1892 - 460 pages
...rectangle is a parallelogram which has one of its angles a right angle. 28. A square is a four.sided figure which has all its sides equal and all its angles right angles. [It may easily be shewn that if a quadrilateral lias all its sides equal and one angle a right angle,... | |
 | Frank Castle - Mathematics - 1899 - 424 pages
...A rectangle is a parallelogram having each of its angles a right angle A square is a parallelogram which has all its sides equal and all its angles right angles. A rhombus is a parallelogram having all its sides equal, but its angles are not right angles. A trapezium... | |
 | Frank Castle - Mathematics - 1900 - 184 pages
...the opposite side, but is also perpendicular to the two adjacent sides. A square is a parallelogram which has all its sides equal, and all its angles right angles. A rhombus is a parallelogram having all its sides equal, but its angles are not right angles. A trapezium... | |
 | Henry Sinclair Hall, Frederick Haller Stevens - Euclid's Elements - 1900 - 330 pages
...triangle must have at least two acute, anyles. ] QUADRILATERALS. 30. A square is a four.sided figure which has all its sides equal and all its angles right angles. [It may be shewn that if a quadrilateral has all its sides equal and one angle a right angle, then... | |
 | Thomas Smith (D.D.) - Euclid's Elements - 1902 - 244 pages
...truth; and that he might just as well have defined an equilateral triangle as a three-sided figure which has all its sides equal and all its angles right angles. It happens, indeed, that the square as defined does exist, and the triangle as so defined does not... | |
 | Euclid - Euclid's Elements - 1904 - 488 pages
...is a triangle which has three acute angles. QUAD RILATE RA IS. 30. A square is a four-sided figure which has all its sides equal and all its angles right angles. [It may be shewn that if a quadrilateral has all its sides equal and one angle a right angle, then... | |
 | Joseph H. Rose - Sheet-metal work - 1906 - 340 pages
...hypothenuse in a right-angled triangle is the side opposite the right angle as in Fig. 7. Fig. 7. Fig. 8. A square is that which has all its sides equal and all its angles right-angled as in Fig. 8. A rectangle is that which has all its angles right angles, but only its... | |
 | Charles Westinghouse - Machine design - 1906 - 168 pages
...40. The hypothenuse in a right angled triangle is the side opposite the right angle as in Fig. 40. A square is that which has all its sides equal and all its angles right-angled as in Fig. 41. A rectangle is that which has all its angles Fig. 41. Fig. 42. right angles,... | |
 | Ernest Murray Blackburn - English language - 1911 - 244 pages
..., a sudden tempest. Square, n., Lat. quadra, [from quatuor four], a four-sided rectilineal figure, which has all its sides equal and all its angles right angles. Squash, v. , [from ex- out + Lat. cogtre to force together], to crush flat. squat, a., lit. 'squashed... | |
 | R. H. Warn, John G. Horner - Technology & Engineering - 2002 - 292 pages
...remaining two being necessarily acute angles, since they make up the other right angle together. 29. A square is that which has all its sides equal, and all its angles right angles (Fig. 9). C. ,3 C Fig. 8. Fig. 9. 30. An oblong is that which has all its angles right angles, but... | |
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An oblong is that which has all its angles right angles, but has not all its sides equal. 
