 | James Atkinson - 1770 - 514 sider
...decreafeth, and the Difference of Latitude is greater than the Latitude failed from, the Ship hath crofled the Equator, and changed her Latitude, either from...into North. 4. General Rule, The 'Sum of the three Angles'of every Plane Triangle is equal to 16 Points of the Compafs : For, i Point "I fi id. 1501.... | |
 | Thomas Keith - 1810 - 478 sider
...other two AB and EC, are called the legs, or sides, or the base and perpendicular. **• Baj-e B (X) The sum of the three angles of every plane triangle Is equal to 180°, hence in a right angled plane triangle, if either acute angle be taken from 90°, the remainder... | |
 | Francis Nichols - 1811 - 162 sider
...properties of plane triangles are requisite in the solution of the cases of oblique-angled triangles. The' sum of the three angles of every plane triangle is equal to two right angles, or 180 degrees (32. 1). Hence 1. When two angles of a triangle are given, the third... | |
 | Abraham John Valpy - 1818 - 594 sider
...figures, the equilateral triangle, the square, and the hexagon, can fill up the Space about a point. That the sum of the three angles of every plane triangle, is equal to two right angles. And, that in any right-angled plane triangle, the square -on the longest side, is... | |
 | Thomas Keith - 1826 - 504 sider
...the other two AB and вс, are called the legs, or sides, or the base and perpendicular. Base: В (X) The sum of the three angles of every plane triangle is equal to 180°, hence in a right angled plane triangle, if either acute angle be taken from 90°, the remainder... | |
 | Thomas Keith - 1839 - 498 sider
...other two, AB and BC, are called the legs, or sides, or the base and perpendicular. A Baj-<? B (68) The sum of the three angles of every plane triangle is equal to 180°; hence in a right-angled plane triangle, if either acute angle be taken from 90°, the remainder... | |
 | Alexander Baharie - 1844 - 218 sider
...obliqueangled triangles. Every plane triangle consists of six-parts, viz. : — three sides and three angles. The sum of the three angles of every plane triangle is equal to 1 80 deg. A right-angled triangle has two acute angles, and one right angle ; an acute-angled triangle... | |
 | Horatio Nelson Robinson - 1853 - 334 sider
...each of the «qual parts of the angle B by y. Let A represent the angle A, and E the angle E. Now as the sum of the three angles of every plane triangle is equal to 180°; therefore, in the the triangle ABC, we have •'wi+2H- 0=180° (1) Also, in the triangle EBQ9... | |
 | Gerardus Beekman Docharty - 1867 - 474 sider
...plane triangles may be included under four cases : 1°. When one side and two angles are given. Since the sum of the three angles of every plane triangle is equal to 180°, therefore, if we subtract the sum of any two angles of the triangle from 180°, we shall have... | |
 | Aaron Schuyler - 1882 - 496 sider
...any regular polygon. A generic property is one which is common to all the species of a genus. Thus, the sum of the three angles of every plane triangle is equal to two right angles. A specific, property is a property which is common to all the individuals of a species.... | |
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The complement of an arc, or angle less than 90°, is what that angle wants of a quadrant, or 90°. 