The triangle is a polygon, which is a plane figure with at least 3 sides. The 3 angles of the triangle always add up to 180 degrees. Trigonometry is the study of the relationship between the angles of triangles and their sides. The longest side of a right angle is called the hypotenuse. There are 6 different triangles: scalene, right, obtuse, acute, isosceles, and equilateral. I HOPE THESE DESCRIPTIONS/FACTS HAVE HELPED YOU!!!!
