Question

If the measure of angle 1 is 57°, find the measures of angle 6

Answer 1

Answer:

123

Step-by-step explanation:

180 - 57 = 123

supplementary

Answer 2

Answer:

∠6 = 123°

Step-by-step explanation:

∠1 = ∠4 because they are vertically opposite angles and vertically opposite angles are equal.

∠4 + ∠6 = 180 (same side interior angles are equal)

∠6 = 180 - 57

∠6 = 123°