the area of the triangle equal, 1/2 *base length* corresponding height, 1/2 *base , base multiplier length , 1/2 * height, the rule of the right angled triangle equal, 1/2 * the base length multiply height, 1/2 * height, 1/2 * base length , Base multiply height, The area of the right angled triangle is, 1/3, 1/2, 1/5, 1/6.

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