Trig Ch. 1 Vocabulary

An acute angle is

• between 0^o and 90^o

• between 90^o and 180^o

• exactly 180^o

• exactly 90^o

An obtuse angle is

• between 0^o and 90^o

• between 90^o and 180^o

• Exactly 180^o

• exactly 90^o

A straight angle is angle is

• between 0^o and 90^o

• between 90^o and 180^o

• exactly 180^o

• exactly 90^o

A right angle is angle is

• between 0^o and 90^o

• between 90^o and 180^o

• exactly 180^o

• exactly 90^o

Complementary angles are angles that:

• add to be 90^o

• add to be 180^o

• are next to each other

• Say nice things to each other

Supplementary angles are angles that:

• add to be 90^o

• add to be 180^o

• are next to each other

• take supplements to get swoll

coterminal angles are two angles that

• have the same initial and terminal side, but rotate differently

• rotate in the same direction, but have different terminal sides

• are in the same shape

• add up to 360

Angle 1 and 4 are called

• a linear pair

• vertical angles

• corresponding angles

• alternate interior angles

• alternate exterior angles

Angle 1 and 8 are called

• a linear pair

• vertical angles

• corresponding angles

• alternate interior angles

• alternate exterior angles

Angle 1 and 5 are called

• a linear pair

• vertical angles

• corresponding angles

• alternate interior angles

• alternate exterior angles