| Jeremiah Day - Algebra - 1814 - 304 pages
...is, For the area is equal to ABxBC. .(Art. 513.) But AŁ=J3C, therefore, AB xBC=AB x AB^AB*. 518. The area of a triangle, is equal to half the product of the base and height. Thus the area of the triangle ABG, (Fig. 7.) is equal to half AB into GHorits equal JBC,... | |
| Jeremiah Day - Algebra - 1827 - 352 pages
...that is, For the area is equal to ABXBC, (Art. 513.) BuUB=.BC, therefore, JlBxBC=AB-X.AB=AB ' 518. The area of a triangle is equal to half the product of the base and height. Thus the area of the triangle J1BG, (Fig. 7.) is equal to half AB into GH or its equal... | |
| Charles Davies - Calculus - 1836 - 296 pages
...passing through the origin of co-ordinates, and we shall have fF(x)dx-—xy, which proves that the area of a triangle is equal to half the product of the base and perpendicular. 286. It is frequently necessary to find the integral or function, between certain... | |
| Mechanics - 1837 - 350 pages
...triangle are given, its area can easily be found. Thus, the writers on mensuration have shown, that the area of a triangle is equal to half the product of the base drawn into the perpendicular altitude ; consequently, if a be put to denote the area of the triangle... | |
| Charles Davies - Calculus - 1838 - 300 pages
...passing through the origin of co-ordinates, and we shall have fF(x)dx-—xy, which proves that the area of a triangle is equal to half the product of the base and perpendicular. 286. It is frequently necessary to find the integral or function, between certain... | |
| Charles Davies - Geometrical drawing - 1840 - 262 pages
...Triangles. 14. A triangle is also half a parallelogram, having the same base and altitude. ~1 15. The area of a triangle is equal to half the product of...the triangle ABC, is equal to half the product of ABxCD. If the base of a triangle is 12, and the altitude 8 yards, the area will be 48 square yards.... | |
| Charles Davies - Geometrical drawing - 1840 - 264 pages
...Triangles. 14. A triangle is also half a parallelogram, having the same base and altitude. 15. The area of a triangle is equal to half the product of...double the triangle. Thus, the area of the triangle AB C, is equal to half the product of ABxCD. If the base of a triangle is 12, and the altitude 8 yards,... | |
| James Bates Thomson - Algebra - 1844 - 266 pages
...For the area is equal to AB x BC. (Art. 388.) But AB=BC, therefore, AB xBC=AB x AB=(AB) 2 . 393. The area of a triangle is equal to half the product of the base and height. Thus the area of the triangle ABG, (Fig. 7,) is equal to half AB into GH or its equal BC,... | |
| Nathan Scholfield - 1845 - 894 pages
...CH.) Scholium. If the base, instead of being exterior, should fall within the triangle, as ]?D, then the area of the triangle ABC is equal to half the product of the base BD into the sum of the perpendicu- A lire AF-j-CH let fall from the angles A anJ C on this... | |
| Jeremiah Day - Algebra - 1847 - 358 pages
...(Fig. 6,) is AB, that is, For the area is eoual to ABxBC. (Art. 513.) But AB=BC, therefore, 518. The area of a triangle is equal to half the product of the base and height. Thus the area of the triangle ABG, (Fig. 7.) is equal to half AB into GHor its equal BC,... | |
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