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Angles in a Triangle

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    Find the missing angles of different triangles.
  •   Study   Slideshow
  • Find angle x.
    30 degrees
  •  15
  • Find angle x.
    101 degrees
  •  15
  • Find angle x.
    24 degrees
  •  15
  • Find angle x.
    61 degrees
  •  15
  • Find angle x.
    28 degrees
  •  20
  • What is an acute angle?
    An angle less than 90 degrees
  •  20
  • What is an obtuse angle?
    An angle greater than 90 degrees
  •  20
  • What is a right angle?
    A 90 degree angle
  •  20
  • How many sides does a triangle have?
    3
  •  20
  • How many degrees are in a triangle?
    180 degrees
  •  20
  • If the sum of two known angles in a triangle is 156, what is the measure of the third angle?
    24 degrees
  •  20