 | Anthony Nesbit - Surveying - 1824 - 476 pages
...are perpendicular to each other. 1 3. An acute angle is less than a right angle, as CAB. D •B 14. The complement of an angle is what it wants to complete a right angle, as the angle DAB is the complement of the angle CA B. 1 5. An obtuse angle is greater than a right... | |
 | Timothy Walker - Geometry - 1829 - 138 pages
...straight line meets another so as to make the two adjacent angles equal — . An acute angle is less than a right angle — An obtuse angle is greater than a right angle — . 20. It follows from the definition that — a right angle has for its measure a quadrant or 90°... | |
 | Charles Haynes Haswell - Engineering - 1844 - 298 pages
...Right Angle is made by a line perpendicular to another, falling upon it. An Acute Angle is less than a right angle. An Obtuse Angle is greater than a right angle. A Triangle is a figure of three sides. An Equilateral Triangle has all its sides equat. An Isosceles... | |
 | John Thomas Crossley - 1845 - 336 pages
...by two oblique lines ; and is either less or greater than a right angle. An Acute Angle is less than a right angle. An Obtuse Angle is greater than a right angle. A Surface or Superficies, is a figure of two dimensions, length and breadth ; but without thickness.... | |
 | Anthony Nesbit - Plane trigonometry - 1847 - 492 pages
...afigles ADC and CDB are both right angles. 13. An acute angle is less than a right angle ; as CA B. 14. The complement of an angle is what it wants to complete a right angle ; as the angle DAB is the complement of the angle CAB. BA -~ 0 15. An obtuse angle is greater than... | |
 | John Weale - 1850 - 590 pages
...line perpendicular to another, or when the angles on each side are equal. An acute angle is less than a right angle. An obtuse angle is greater than a right angle. A plane is a surface with which a straight line will every where coincide; and is otherwise called... | |
 | Charles Haynes Haswell - Engineering - 1851 - 346 pages
...Right Angle is made by a line perpendicular to another, falling upon it An Acute Angle is less than a right angle. - * An Obtuse Angle is greater than a right angle. A Triangle is a figure of three sides. An Equilateral Triangle has all its sides equal. An Isosceles... | |
 | Charles Haynes Haswell - Measurement - 1858 - 350 pages
...Right Angle is made by a line perpendicular to another falling upon it. An Acute Angle is less than a right angle. An Obtuse Angle is greater than a right angle. An Arc is any part of the circumference of a circle. A Chord is a right line joining the extremities... | |
 | Great Britain. Committee on Education - Education - 1864 - 332 pages
...by two oblique lines; and is either less or greater than a right angle. An Acute Angle is less than a right angle. An Obtuse Angle is greater than a right angle. A Surface or Superficies, is a figure of two dimensions, length and breadth ; but without thickness.... | |
 | Anthony Nesbit - 1870 - 578 pages
...angles ADC and CDB are both right angles. 13. An acute angle is less than a right angle ; as CAB. 14. The complement of an angle is what it wants to complete a right angle ; as the angle DAB is the complement of the angle CAB. 15. An obtuse angle is greater than a right... | |
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An acute angle is less than a right angle. An obtuse angle is greater than a right angle. 
