6th Grade Math Textbook, Progress

Find the measure of the third angle of each triangle.

1. 
   
   
   
   2. 
      
      
      
      3. 
         
         
         
         4. 
            
         
         
         
         
      
      
      
      
   
   
   
   


2. 
   D
   43°,
   T
   29°,
   F
   6.
   W
   16°,
   B
   5°,
   U
   

Find the measure of the fourth angle of the quadrilateral.

7. 
   A
   85°,
   B
   85°, 8.
   E
   65°,
   F
   90°, 9.
   Q
   89°,
   R
   67°,
   
   C
   65°,
   D
   
   G
   90°,
   H
   
   S
   102°,
   T
   

Find the value of nin each quadrilateral.

10. 
    
    
    
    11. 
        
        
        
        12. 
            
        
        
        
        
    
    
    
    

???

??

Find the value of each variable.

13. 
    
    
    
    14. 
        
        
        
        15. 
            
        
        
        
        
    
    
    
    


14. Two angles of a triangle are 17. In parallelogram ABCD, the measure
    congruent and the measure of the of
    ABCis 165°. Find the measure
    third angle is 120°. Find the measure of
    C.
    of one the congruent angles.

N

MP

45 ° 55 °

n

R

S

T

30 ° 110 °

n

Y

X Z

45 °

n

D

E F

83 °

29 °

n

L

MO

P

120 ° 60 °

60 ° n

B

C

A

D

60 °

y°

x°

M

Q

N

O

75 ° P

75 ° 50 °

y°^45 °

x°

x° D

E

F

H

G

60 °

55 °^80 °

z°

y°

x°

BC

AD

110 °

n

P

Q R

S

nn

nn

If you extend a side of a triangle, you form an

exterior angle of the triangle.

18. 
    ACDis an exterior angle of ABC.
    Find the measure of
    ACD. Explain
    how you found your answer.
    C B

A

D

45 °

47 °

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