 | D. Ponton - 1927 - 168 σελίδες
...it. A right angle contains 90 degrees. An Obtuse Angle is one which is greater than a right angle. An Acute Angle is one which is less than a right angle. A Straight Angle is one which contains two right angles. A Plane Figure is any portion of a plane surface... | |
 | William Neville Rose - 1928 - 552 σελίδες
...magnitude of that power is called the exponent. An obtuse angle is one which is greater than a right angle. An acute angle is one which is less than a right angle. A scalene triangle has three unequal sides. The locus of a point is the path traced by the point when... | |
 | Nathaniel Bowditch - 1931 - 866 σελίδες
...circle being the point of intersection. A right angle ia one that is measured by a quadrant, or 90°. An acute angle is one which is less than a right angle....angle is one which is greater than a right angle. A plane triangle is a figure contained by three straight lines in the same plane. When the three sides... | |
 | Lewis Carroll, Charles Lutwidge Dodgson - 2004 - 336 σελίδες
...language : for instance, what is your Definition of an obtuse angle ? NIEMAND reads. P. 8. Def. 13. 'An obtuse angle is one which is greater than a right angle.' Min, So you tumble headlong into the very first pitfall you come across ! Why, that includes such angles... | |
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An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF. 
