2.6

Question 1

Vertical Angles

Answer 1

Two angles are vertical if their sides form two pairs of opposite rays.

Question 2

Linear Pair

Answer 2

Two adjacent angles are a linear pair if their noncommon sides form opposite rays.

Question 3

Complementary Angles

Answer 3

Two angles are complementary if the sum of their measures is 90 degrees. Each angle is the complement of the other.

Question 4

Linear Pair Postulate

Answer 4

If two angles for a linear pair, then they are supplementary i.e. the sum of their measures is 180 degrees.

Question 5

Thm. 2.1 Congruent Supplements Theorem

Answer 5

If two angles are supplementary to the same angle or to congruent angles, then they are congruent.

Question 6

Thm. 2.2 Congruent Complements Theorem

Answer 6

If two angles are complementary to the same angle or to congruent angles, then they are congruent.

Question 7

Thm. 2.3 Vertical Angles Theorem

Answer 7

If two angles are vertical angles, then they are congruent.

Question 8

Supplementary Angles

Answer 8

Two angles are supplementary if the sum of their measures s 180 degrees. Each angle is the supplement of the other.