## A Course of Mathematics: In Two Volumes. Composed for the Use of the Royal Military Academy, Volume 1Longman, Orme & Company, 1841 - Mathematics |

### From inside the book

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Page 292

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**angle**, and the straight lines are said to be perpen- dicular to one another . 26. An oblique**angle**is that which is made by two oblique lines ; and is either less or greater than a right**angle**. Of oblique**angles**, that which is less ... Page 293

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**angle**. All other triangles are oblique - angled , and are either obtuse or acute . 34. An obtuse - angled triangle has one obtuse**angle**. 35. An acute - angled triangle has all its three**angles**acute . 36. A figure of four sides and**angles**... Page 294

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**angle**, or its vertex , to the opposite side , called the base . 57. In a right - angled triangle , the side opposite the right**angle**is called the hypothenuse ; and the other two sides are called the legs , and sometimes the base and ... Page 295

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**angle**on a segment , or an arc , is that which is contained by two lines , drawn from any point in the opposite or supplemental part of the circum- ference , to the extremities of the arc , and containing the arc between them . 65. An**angle**... Page 296

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**angles**are equal to one another . 11.**Angles**that have equal measures , or arcs , are equal . THEOREM I. * If two triangles have two sides and the included**angle**in the one , equal to two sides and the included**angle**in the other , the ...### Other editions - View all

### Common terms and phrases

a₁ ABCD algebraic annum arithmetical arithmetical progression base bisect centre circle circumference coefficients common difference compound compound interest cosec cube root decimal denominator denote diagonal diameter distance divided dividend division divisor draw drawn equal equiangular EXAMPLES expression factors figure fraction geometrical geometrical progression given number greater hence inscribed integer intersection least common multiple length less lineation logarithms method Multiply number of terms parallel parallel ruler parallelogram perpendicular plane polygon prism PROBLEM proportional quantity quotient radius ratio rectangle Reduce remainder result right angles rule Scholium sides signs solution square root straight line subtract tangent THEOREM third triangle ABC vulgar fraction Whence whole yards