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`A = | (X_3*Y_2+Y_3*X_1+Y_1*X_2 - Y_2*X_1 - Y_3*X_2-X_3*Y_1)/2 |`

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The **Area of a Triangle Based on Three Defined Points in a Plane** calculator computes the area of a triangle given the coordinates (X_{i}, Y_{i}) of the triangle’s three vertices (P_{1} , P_{2} , P_{3}).

**INSTRUCTIONS:** Enter the x and y coordinates of the triangle’s three vertices:

- (
**P**X and Y coordinates of vertex point 1_{1}) - (
**P**X and Y coordinates of vertex point 2_{2}) - (
**P**X and Y coordinates of vertex point 3_{3})

**AREA (A):** The calculator computes the area or the triangle. Note: the units would be equal to those of the coordinates.

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