1.   Find the value of x in if °
and °, and is a right angle.
    A. 5 B. 15
    C. 10 D. 20
    Hint

  2.   Find the measure of each angle in if °,
°, and is a right angle.
    A. 90°, 70°, 20° B. 90°, 60°, 30°
    C. 90°, 55°, 35° D. 90°, 65°, 25°
    Hint

  3.   Find the measure of each angle in XYZ if mX = (3x+20)°, mY = (2x+20)°, and Z is a right angle.
    A. 90°, 40°, 50° B. 90°, 45°, 45°
    C. 90°, 30°, 60° D. 90°, 20°, 70°
    Hint

  4.   Find the value of x in RST if m R = 3x°, mS = 3x°, and mT = 90°.
    A. x = 10 B. x = 45
    C. x = 20 D. x = 15
    Hint

  5.   A triangle with three congruent sides is called ____________.
    A. Scalene B. Right
    C. Obtuse D. Equilateral
    Hint



Glencoe
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