Basic Geometry Ch 10.1

When 3 points lie on the same line, we say that the 3 points are _____________.

• Acute angle

• Obtuse angle

• Right angle

• Straight angle

• Obtuse angle

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

• Reflex angle

• Acute

• Obtuse

• Reflex

• Right

• Straight

• Acute

• Obtuse

• Reflex

• Right

• Straight

 $176\degree$ is a 

• right angle

• obtuse angle

• acute angle

• reflex angle

 $326\degree$  is a 

• obtuse angle

• reflex angle

• acute angle

• right angle

 $48\degree$  is a 

• right angle

• reflex angle

• obtuse angle

• acute angle

Two angles are complementary when they add up to ______ $\degree$  

When two angles add up to  $180\degree$  , they are _______________________ angles.