 | 1834 - 578 σελίδες
...Si t, being very small, differs insensibly from the straight line joining the points s, t ; and the area of a triangle is equal to half the product of its base, and the perpendicular from its vertex. Again, the angle t E s, being very small, the perpendicular from... | |
 | Charles Davies - 1838 - 292 σελίδες
...The side BA or the side AC, opposite the right angle, is called the hypothenuse.' The area or content of a triangle is equal to half the product of its base by its altitude. EXAMPLES. 1. The base of a triangle is 40 yards and the perpendicular 20 yards : what... | |
 | Charles Davies - 1844 - 358 σελίδες
...The side BA or the side AC, opposite the right angle, is called the hypothenuse. The area or content of a triangle is equal to half the product of its base by its altitude. EXAMPLES. 1. The base of a triangle is 40 yards and the perpen dicular 20 yards :... | |
 | Perry Fairfax Nursey - 1846 - 536 σελίδες
...bottomed vessel, ABD, has the same breadth and depth as А С С В, and has only half its capacity ; for the area of a triangle is half the area of a parallelogram upon the same base and between the same parallels ; and in the same manner it may be proved, arithmetically,... | |
 | 1846 - 544 σελίδες
...sharp-bottomed vessel, ABD, has the same breadth and depth as ACCB, and has only half its capacity ; for the area of a triangle is half the area of a parallelogram upon the same base and between the same parallels ; and in the same manner it may be proved, arithmetically,... | |
 | Charles Davies - 1847 - 368 σελίδες
...The side BC, or the side AC, opposite the right angle, is called the hypothenuse. The area or content of a triangle is equal to half the product of its base by its altitude. EXAMPLES. 1. The base, AB, of a triangle is 40 yards, and the perpendicular, CD, 20... | |
 | Elias Loomis - 1849 - 252 σελίδες
...Schol.); therefore the area of the parallelogram ABCD is equal to AB X AF. PROPOSITION VI. THEOREM. The area of a triangle is equal to half the product of its base by its altitude. For, complete the parallelogram ABCE. The triangle ABC is half of the parallelo- ^... | |
 | Charles Davies - 1850 - 238 σελίδες
...other, as A x C : BxC: that is, as A : B. GEOMETRY. Areta of Triangles and Trapezoids. THEOREM IX. The area of a triangle is equal to half the product of its base by its altitude. Let ABC be any triangle and CD its altitude : then will its area be equal to half... | |
 | Charles Davies - 1850 - 218 σελίδες
...altitude, then they will be to each other, as GEOMETRY. Areas of Triangles and Trapezoids. THEOREM IX. The area of a triangle is equal to half the product of its base by its altitude. Let AE C be any triangle and CD its altitude : then will its area be equal to half... | |
 | Charles Davies - 1850 - 412 σελίδες
...side BC, or the side AC, opposite the right angle, is called the hypothenuse. The area or contents of a triangle is equal to half the product of its base by its altitude (Bk. IV. Prop. VI).* EXAMPLES. 1. The base, AB, of a triangle is 50 yards, and the... | |
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The area of a triangle is equal to half the product of its base by its altitude. 
