 | Edward Brooks - 1868 - 284 páginas
...another, making the adjacent angles equal. The first line is then said to be perpendicular to the other. 13. An OBTUSE ANGLE is one which is greater than a right angle; as, ACD. An ACUTE ANGLE is one which is less than a right angle; as, DCB. -a. U' Jf Obtuse and acute angles... | |
 | Benjamin Greenleaf - 1868 - 340 páginas
...angle CAB. B 16. An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF. An 0BTUSE ANGLE is one which is greater than a right angle ; as the angle EFG. E, E. B D Acute and obtuse angles have their sides oblique to each other, and are sometimes called... | |
 | James Maurice Wilson - 1868 - 132 páginas
...right angle; or of the sum of two angles to say that it is equal to the sum of two right angles. Def. 13. An obtuse angle is one which is greater than a right angle. THEOREM 2. From a given point outside a given straight line of indefinite length one perpendicular,... | |
 | Henry Bartlett Maglathlin - 1869 - 332 páginas
...angle ACE is a right angle. An Acute Angle is one which is less than a right angle ; as the angle BCD. An Obtuse Angle is one which is greater than a right angle ; as the angle AC D. The sides of an angle are the lines forming it, and the vertex of an angle the point of their... | |
 | Benjamin Greenleaf - 1869 - 516 páginas
...angle CAB. B D 16. An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF. An 0BTUSE ANGLE is one which is greater than a right angle ; as the angle EFG. EF G D Acute and obtuse angles have their sides oblique to each other, and are sometimes called... | |
 | Bernhard Marks - 1869 - 172 páginas
...rps an acute angle ? • What is an acute angle ? OBTUSE ANGLES. Then it is called an obtuse angle. An obtuse angle is one which is greater than a right angle. What other obtuse angle has its vertex at p ? Obtuse means blunt. Read three obtuse angles whose vertices... | |
 | Bernard Marks - 1871 - 172 páginas
...ANGLES. Is the angle mps greater or less than the right angle mpr ? Then it is called an obtuse angle. An obtuse angle is one which is greater than a right angle. What other obtuse angle has its vertex at p ? Obtuse means blunt. Eead three obtuse angles whose vertices... | |
 | Euclides - 1871 - 136 páginas
...the angles is called a RIGHT ANGLE; and each line is said to be a PEEPENDICULAB to the other. c X. An OBTUSE ANGLE is one which is greater than a right angle. XI. An ACUTE ANGLE is one which is less than a right angle. XII. A FIGURE is that which is enclosed... | |
 | Euclides, James Hamblin Smith - 1872 - 376 páginas
...angles is called a EIGHT ANGLE; and each line is said to be a PER. _^_ PENDICULAR to the other. X. An OBTUSE ANGLE is one which is greater than a right angle. XI. An ACUTE ANCLE is one which is less than a right angle. XII. A FIGURE is that which is enclosed... | |
 | Benjamin Greenleaf - 1873 - 202 páginas
...Right Angle is one which is formed by a straight line and a perpendicular to it ; as the angle CA B. B An Obtuse Angle is one which is greater than a right angle ; as the angle EFG. F o * Acute and obtuse angles are sometimes called oblique angles. 14. Parallel Lines are such... | |
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An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF. 
