| Area of Parallelograms, Triangles, Rhombi, and Trapezoids | ||||||||||||||
| The formulas for finding the areas of these figures are very similar, and they are also connected. | ||||||||||||||
| Parallelogram A=bh Remember, height (h) is not the length of the side, but the distance between the bases. b= base h=height |
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| Triangle A=1/2 bh As with parallelograms, the height is the length of the altitude. b= base h= height |
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| Trapezoid First, you find the average of the bases and multiply it times the height. If the bases have lengths of b1 and b2, then the equation is A= h 1/2 (b1 + b2) |
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| Rhombus If a rhombus has diagonals of d1 and d2, then the area = A=1/2 d1d2 |
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