Block 1 answer choice : congruent , complementary , supplementary , or adjacent angles block 2 answer choice : The measure of angle 2 equals the measure of angle 3 , The measure of angle 2 equals the measure of angle 1 , or The sum of the measures of angle 2 and 3 equals 180°

block 3 answer choice : angle 2 and angle 3 are supplementary , angle 1 and angle 3 or supplementary , or angle 1 and angle 2 are supplementary.