Geometric Derivation of the Trapezoid Area Formula
2016-06-07 07:40
This applet demonstrates the trapezoid area formula derivation via geometric construction and transformations. By adding auxiliary lines and applying rotations, the trapezoid transforms into triangles or parallelograms, verifying the formula: area equals half the sum of parallel sides times height. Ideal for middle school geometry to understand the formula's geometric essence.
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