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1. Is a polygon with three sides with three vertices and three angles

   • Triangles according to Sides
     • Equilateral Triangle that has three equal sides
       • Scalene Triangle that has no equal sides
         • Isosceles Triangle that has two equal sides
   • Triangles according to Angles
     • Equilateral Triangle that has three equal angles
       • Acute Triangle are all angles that is less than 90 degrees
         • Right Triangle is equal to 90 degrees
           • Obtuse Triangle, one of the angle is more than 90 degrees but less than 180 degrees

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