Angle Relationships

An angle with a measure of exactly

 $90\degree$  

• Obtuse

• Right

• Acute

• Straight

An angle with a measure of exactly

 $180\degree$  

• Obtuse

• Right

• Acute

• Straight

An angle with a measure of less than 

 $90\degree$  

• Obtuse

• Right

• Acute

• Straight

An angle with a measure of greater than

 $90\degree$  but less than  $180\degree$  

• Obtuse

• Right

• Acute

• Straight

Angles that share a common vertex are called_________

• Adjacent Angles

• Vertical Angles

• Complementary Angles

• Supplementary Angles

Angles that are opposite each other when 2 lines intersect AND are congruent.

• Adjacent Angles

• Vertical Angles

• Complementary Angles

• Supplementary Angles

Two angles whose sum of their measure is  $90\degree$  

• Adjacent Angles

• Vertical Angles

• Complementary Angles

• Supplementary Angles

Two angles whose sum of their measure is  $180\degree$  

• Adjacent Angles

• Vertical Angles

• Complementary Angles

• Supplementary Angles

The word congruent means _______

• Having the same measure

• Having the same vertex

• Sharing a ray

• Two rays with a vertex

What is the measure of  $\angle ABD$ ?

•  $90\degree$  

•  $42\degree$  

•  $X\degree$  

•  $180\degree$