Which triangle meets the criteria for the ambiguous case? A triangle has angle measures of 58 degrees and 51 degrees. A side with length 7 is opposite of the 58 degree angle. A triangle has side lengths of 4 and 6. The angle between the 2 sides is 66 degrees. A triangle has side lengths of 5 and 3. The angle opposite to the side with length 5 is 84 degrees.