Triangle Area = (b ∙ h)/2 Why? Visual proof (2)

The definition of equidecomposability is here, as well as another visual proof of this same concept. Use the slider to dissect the triangle and obtain an equivalent parallelogram. Move the vertices A, B and C of the triangle to explore different configurations.
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– Simona Riva

Information: Triangle Area = (b ∙ h)/2 Why? Visual proof (2)