Mr. thomas wrote these true statements. if a figure is a triangle, the sum of the figure's interior angles is 180. figure abc is a triangle. which conclusion can be drawn? using the law of detachment, the sum of the interior angles of abc is 180. using the law of detachment, if the sum of a figure’s interior angles is 180, then the figure is a triangle. using inductive reasoning, the sum of the interior angles of abc is 180. using inductive reasoning, if the sum of a figure’s interior angles is 180, then the figure is a triangle.