1.   Which figure is an isosceles triangle?
    A. B.
    C. D.
    Hint

  2.   Refer to the figure shown. Name the vertices of the equilateral triangle.
   
    A. W, X, Y B. X, Y, Z
    C. U, V, Z D. U, Z, W
    Hint

  3.   Triangle RST is isosceles with as the vertex angle. If ST = 3x - 11, SR = x + 3, and RT = x - 2, find RT.
   
    A. 7 B. 5
    C. 14 D. 9
    Hint

  4.   Triangle KMS is equilateral. Find KM if KM = x + 6, KS = 2x – 3, and MS = 4x – 21.
    A. 9 B. 21
    C. 15 D. 4
    Hint

  5.   Which given lengths could be sides of a triangle?
    A. 4, 6, 2 B. 8, 3, 5
    C. 12, 8, 3 D. 15, 8, 9
    Hint



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