8.3 Review: Angle Relationships and Triangles

The sum of their angles adds up to 180°

The sum of their angles adds up to 90°

Angles that are directly across from each other and are congruent

Angles that share a ray and a vertex

The sum of their angles adds up to 180°

The sum of their angles adds up to 90°

Angles that are directly across from each other and are congruent

Angles that share a ray and a vertex

The sum of their angles adds up to 180°

The sum of their angles adds up to 90°

Angles that are directly across from each other and are congruent

Angles that share a ray and a vertex

The sum of their angles adds up to 180°

The sum of their angles adds up to 90°

Angles that are directly across from each other and are congruent

Angles that share a ray and a vertex

$$2x+4\ =\ 62$$  

$$2x+4+62=180$$  

$$2x+4+62=90$$  

12

 57

29 

$$118\degree$$  

  $$28\degree$$  

$$62\degree$$  

$$2x-38\ =\ 148$$  

$$2x-38+148=180$$  

$$2x-38+148=90$$  

55 

93 

35 

$$32\degree$$  

$$72\degree$$  

40x