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Triangles

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  • a triangle with all angles smaller than 90 degrees
    acute triangle
  • a shape with 3 sides, 3 angles
    triangle
  • lines that meet at 90 degree angle
    perpendicular lines
  • a triangle with one 90 degree angle
    right triangle
  • same size and same shape
    congruent
  • triangle with no sides equal in length
    scalene triangle
  • triangle with all 3 sides equal in length
    equilateral triangle
  • describe a characteristic or feature of a shape
    attributes
  • a triangle with one angle larger than 90 degrees
    obtuse triangle
  • triangles with 2 sides equal in length
    isosceles triangle
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