

1. 
Classify the triangle by its angles and by its sides. 





A. 
acute, equilateral 
B. 
acute, isosceles 


C. 
obtuse, scalene 
D. 
obtuse, isosceles 


Hint 


2. 
Classify . 





A. 
right, equilateral 
B. 
acute, scalene 


C. 
right, isosceles 
D. 
obtuse, isosceles 


Hint 


3. 
Classify the triangle by its angles and its sides. 





A. 
acute, equilateral 
B. 
obtuse, scalene 


C. 
acute, scalene 
D. 
obtuse, isosceles 


Hint 


4. 
Find mB in ABC if mA = 85° and mC = 11°. 


A. 
84° 
B. 
104° 


C. 
92° 
D. 
6° 


Hint 


5. 
Find mE in DEF if mD = 34° and mE = 117°. 


A. 
56° 
B. 
63° 


C. 
61° 
D. 
29° 


Hint 


