Which one does not belong with the other three? Explain.

Four diagrams of angles. The first diagram shows a right angle split into angle 1 and angle 2 by a ray. The second diagram shows two separate angles: angle A which measures 50 degrees and angle B which measures 40 degrees. The third diagram shows a straight line split into angle 3 and angle 4 by a ray. The fourth diagram shows two separate angles: angle S which measures 65 degrees and angle T which measures 25 degrees.

Responses

first diagram; It is the only diagram with adjacent angles.

second diagram; It is the only diagram with complementary angles.

third diagram; It is the only diagram with supplementary angles.

fourth diagram; It is the only diagram with neither complementary nor supplementary angles.