1.   Classify the triangle by its angles.
   
    A. acute B. obtuse
    C. right D. none of these
    Hint

  2.   Classify the triangle by its angles.
   
    A. right B. none of these
    C. acute D. obtuse
    Hint

  3.   Classify the triangle by its angles.
   
    A. acute B. none of these
    C. right D. obtuse
    Hint

  4.   Find the value of x in the triangle.
   
    A. 35 B. 30
    C. 25 D. 40
    Hint

  5.   Classify the triangle by its sides.
   
    A. equilateral and scalene B. scalene
    C. isosceles D. equilateral
    Hint