6.1-6.2: Core Vocabulary

right angle

• <90

• =90

• >90, <180

• >180

adjacent angles

• add together equal to 90

• add together equal to 180

• add together equal to 360

• share a common side and a common vertex

reflex angle

• <90

• =90

• >90, <180

• >180

complementary angles

• add together equal to 90

• add together equal to 180

• add together equal to 360

• share a common side and a common vertex

obtuse angle

• <90

• =90

• >90, <180

• >180

angles at a point

• add together equal to 90

• add together equal to 180

• add together equal to 360

• share a common side and a common vertex

acute angle

• <90

• =90

• >90,<180

• >180

supplementary angles

• add together equal to 90

• add together equal to 180

• add together equal to 360

• share a common side and a common vertex

adjacent angles at a straight line

• add together equal to 90

• add together equal to 180

• add together equal to 360

• share a common side and a common vertex

describe what is vertex