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Type the correct answer for each question in the spaces provided. When you have completed your quiz, check your answers. 

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Determine the measure of the missing angle for each of the following triangles. Select your answers from the choices given.



1.Triangle ABC is an equilateral triangle. What is the measure of angle B? 

a. 50 degrees
b. 60 degrees 
c. 45 degrees


2.Triangle DEF is a scalene triangle. If angle D is 75 degrees and angle F is 55 degrees, what is the measure of angle E?

a. 50 degrees 
b. 55 degrees 
c. 60 degrees


3.Triangle XYZ is an isosceles triangle. If angle Y is 20 degrees, what is the measure of both angle X and angle Z?

a. 75 degrees
b. 80 degrees 
c. 85 degrees
















a. 60 degrees 
b. 70 degrees 
c. 75 degrees

















a. 25 degrees
b. 28 degrees
c. 30 degrees 

















a. 44 degrees 
b. 60 degrees
c. 80 degrees














a. 60 degrees
b. 70 degrees 
c. 80 degrees
















a. DE = 10 in.
b. DE = 16 in. 
c. DE = 18 in.


















a. KL = 35 ft
b. KL = 39 ft
c. KL = 45 ft 


Math:  Triangles - Quiz