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AREA OF A TRIANGLE

AREA OF A TRIANGLE. E. F. D. A. O. h units. B. C. a units. Consider a triangle ABC having BC = a units. Draw the height AD= h units. Draw a line EF, dividing the height AD in equal parts at O. A. E. O. F. B. C. Cut the upper triangles AEO & AOF. E. F. D. A. E. O.

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AREA OF A TRIANGLE

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  1. AREA OF A TRIANGLE

  2. E F D A O h units B C a units • Consider a triangle ABC having BC = a units. • Draw the height AD= h units. • Draw a line EF, dividing the height AD in equal parts at O.

  3. A E O F B C • Cut the upper triangles AEO & AOF.

  4. E F D A E O F B C • Join the triangle AOF in the side of FC & triangle AEO in the side of BE.

  5. h/2 units A G E O F H B C D a units • Now BCHG forms a rectangle having BC = a units & height = h/2 units.

  6. h/2 units A G E O F H B C D a units • Area of the triangle = Area of the rectangle = length x breadth = BC x BG = BC x OD = ( a x h/2) sq. units = ½ a. h sq. units

  7. Thank You

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