/*
 * area of a triangle
 */

#include <math.h>

#include "geom.h"

double area(struct triangle t)
{
    return 0.5*(fabs((t.b.x - t.a.x)*(t.c.y - t.a.y) - (t.c.x - t.a.x)*(t.b.y - t.a.y)));
}