The vertices of a triangle are (š,š), (āš,š) and (š,āš). Find the area of the triangle.
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Solution
Given, vertices of the triangle are (2,3), (-1,0) and (-2,4). ā“ Area of the triangle =12[x1(y2āy3)+x2(y3āy1)+x3(y1āy2)] =12[2{0ā(ā4)}+(ā1){ā4ā3)}+2{3ā0}] =12[8+7+6] =212 sq. units