standard_description: Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side.
problem_activity: Below is a set of coordinate points. Graph these points, connect the points into a linear function, and then graph the inverse of this function.
$${(-2,-4)}$$
$${(1,-2.5)}$$
$${(2,-2)}$$


aligns: no