 | John Tilden Prince - 1895 - 358 σελίδες
...parallelograms hav- « «"/ Jing the same base and altitude. 3. Show from the facts learned that the area of a triangle is equal to half the product of its base by its altitude ; ie, 4. Draw a right triangle whose base is 3 in. and whose perpendicular is 4 in. What is... | |
 | Andrew Wheeler Phillips, Irving Fisher - 1897 - 376 σελίδες
...lateral area of the pyramid is the sum of the areas of the triangles OAB, OBC, etc. § 652 The area of each triangle is equal to half the product of its base and altitude. Hence area OAB=\ABx OH, area OBC=\BC X OH, etc. § 650 Therefore the lateral area of... | |
 | Andrew Wheeler Phillips, Irving Fisher - 1897 - 374 σελίδες
...lateral area of the pyramid is the sum of the areas of the triangles OAB, OBC, etc. § 652 The area of each triangle is equal to half the product of its base and altitude. Hence area OAB=$AB x OH, area OBC=\ BC X OH, etc. § 650 Therefore the lateral area of... | |
 | George Albert Wentworth - 1899 - 248 σελίδες
...The area of a parallelogram is equal to the product of its base by its altitude. 403. The area of a triangle is equal to half the product of its base by its altitude. 404. Triangles having equal bases and equal altitudes are equivalent. 405. Triangles having... | |
 | George Albert Wentworth - 1899 - 272 σελίδες
...other as the products of their bases by their altitudes. PROPOSITION V. THEOREM. 403. The area of a triangle is equal to half the product of its base by its altitude. D Let a be the altitude and b the base of the triangle ABC. To prove that the area of the... | |
 | George Albert Wentworth - 1899 - 500 σελίδες
...other as the products of their bases by their altitudes. PROPOSITION V. THEOREM. 403. The area of a triangle is equal to half the product of its base by its altitude. A b BD Let a be the altitude and b the base of the triangle ABC. To prove that the area of... | |
 | George Albert Wentworth - 1902 - 246 σελίδες
...altitude. 401. Parallelograms having equal bases and equal altitudes are equivalent. 403. The area of a triangle is equal to half the product of its base by its altitude. 405. Triangles having equal bases are to each other as their altitudes; triangles having... | |
 | George Albert Wentworth - 1904 - 496 σελίδες
...other as the products of their bases by their altitudes. 188 PROPOSITION V. THEOREM. 403. The area of a triangle is equal to half the product of its base by its altitude. A b BD Let a be the altitude and b the base of the triangle ABC. To prove that the area of... | |
 | Edward Rutledge Robbins - 1906 - 268 σελίδες
...each other as the products of their bases by their altitudes. Proof: (?). 378. THEOREM. The area of a triangle is equal to half the product of its base by its altitude. Given : A ABC ; base = b \ altitude = h. To Prove : \ Area of A ABC = -£ b - h. Proof :... | |
 | 1906 - 528 σελίδες
...the proteid triangle is just 50 per cent of the altitude of the whole triangle. Since the area of a triangle is equal to half the product of its base by its altitude, it follows that triangles having the same bases have their areas in proportion to their altitudes.... | |
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The area of a triangle is equal to half the product of its base by its altitude. 
