1.  Which triangle has all three sides equal in length? 

Hint
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2.  A triangle has angle measurements of 90°, 37°, and 53°. What type of triangle is this? 
 Halfnhalf Clue
 

3.  A triangle has angle measurements of 23°, 36°, and 121°. What type of triangle is this? 
 Halfnhalf Clue
 

4.  A triangle has two sides measuring 15 meters and one side measuring 9 meters. What type of triangle is this? 
 Halfnhalf Clue
 

5.  What type of triangle is Δ ABC, where ∠A = ∠B = ∠C = 60°? 
 Halfnhalf Clue
 

6.  What type of triangle is Δ XYZ, where ∠X = 53°, ∠Y = 66° and ∠Z = 61°? 
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7.  An equilateral triangle is also an _______ triangle. 
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