| Jeremiah Day - Algebra - 1827 - 332 pages
...is AB, 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...the base and height. Thus the area of the triangle** J1BG, (Fig. 7.) is equal to half AB into GH or its equal BC, that is, For the area of the parallelogram... | |
| Charles Davies - Calculus - 1836 - 283 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 limits... | |
| Mechanics - 1837
...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 - 283 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 limits... | |
| Charles Davies - Geometrical drawing - 1840 - 252 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 base** by the altitude ; for, the base multiplied by the altitude gives a rectangle, which is double the triangle.... | |
| Jeremiah Day - Algebra - 1841 - 332 pages
...square AC, (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...parallelogram ABCD is (Art. 513.) And by Euc. 41,** 1,t if a parallelogram and a triangle are upon the same base, and between the same parallelaj the triangle... | |
| Jeremiah Day, James Bates Thomson - Algebra - 1844 - 252 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...equal to half AB into GH or its equal BC, that is,** a=4 ABxBC. triangle are upon the same base, and between the same paral 1 lels, the triangle is half... | |
| Jeremiah Day, James Bates Thomson - Algebra - 1844 - 252 pages
...(Art. 388.) But AB=BC, therefore, AB xBC=AB x AB=(AB)2. 393. The area of a trinngle is equal to Act//" **the product of the base and height. Thus the area...equal to half AB into GH or its equal BC, that is,** a=j ABxBC. 239 triangle are upon the same base, and between the same parallels, the triangle is half... | |
| James Bates Thomson - Algebra - 1846 - 252 pages
...a=(AB)2. For the area is equal to ABxBC. (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** tire area of the triangle ABG, (Fig. 7,) is equal to half AB into GH or its equal BC, that is, a=\... | |
| Charles Davies - Geometrical drawing - 1846 - 240 pages
...parallelogram, having the same base and altitude. 15. What is the area of a triangle equal to? The **area of a triangle is equal to half the product of the base** by the altitude ; for, the base multiplied by the altitude gives a rectangle which is double the triangle.... | |
| |