Tetrahedral abrasive particles in abrasive articles

An abrasive article comprising:

• a backing defining a major surface;
• and
• an abrasive layer comprising a plurality of tetrahedral abrasive particles attached to the backing;
• wherein the tetrahedral abrasive particles comprise four faces joined by six edges terminating at four vertices, each one of the four faces contacting three of the four faces, and a major portion of the tetrahedral abrasive particles have at least one of the vertices oriented in substantially a same direction;
• and
• wherein a length of the edges independently ranges from about 150 μm to about 200 μm and wherein an average radius of curvature of a vertex of each of the plurality of tetrahedral particles independently ranges from about 0.5 μm to about 50 μm.