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Geometry Recap - Lines, Angles, Figures

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  • Classify the lines. Are they parallel, perpendicular, intersecting?
    Perpendicular and intersecting
  • What is an obtuse angle?
    An angle that is greater than 90 degrees (but less than 180 degrees)
  • Classify this triangle by its angles.
    Obtuse
  • What is a scalene triangle?
    All the sides are different lengths
  • Classify the lines. Are they parallel, perpendicular, intersecting?
    Parallel
  • What is an acute angle?
    An angle that is less than 90 degrees (but greater than zero degrees)
  • Classify the lines. Are they parallel, perpendicular, intersecting?
    Perpendicular and intersecting
  • Classify this triangle by its angles.
    Right
  • Is this a right triangle?
    No. It is scalene.
  • What is an equilateral triangle?
    All the sides are the same length
  • Is this an acute angle?
    Yes!
  • What is an isosceles triangle?
    A triangle that has two sides that are the same length
  • What is a right angle?
    An angle that measures 90 degrees.
  • Classify the lines. Are they parallel, perpendicular, intersecting?
    Intersecting
  • Classify this triangle by its angles.
    Acute
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