Triangles

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Across
  1. 1. two elements of triangle are angles and ____ .
  2. 2. _______triangle in which all three sides have the same length.
  3. 4. a figure formed by three line segments joining three noncollinear points.
Down
  1. 1. triangle in which all three sides have different length
  2. 3. in Isosceles triangle, ______ sides are equal in length.