RIGHT TRIANGLE that is exactly 90 degrees,, , ACUTE TRIANGLE angles are less than 90 degrees, , OBTUSE TRIANGLE that has one angle greater than 90 degrees, , EQUILATERAL  TRIANGLE  An equilateral triangle is a triangle in which all three sides are equal in length, , ISOSCELES TRIANGLE An isosceles triangle has two sides of equal length and two angles that are also equal, , SCALENE TRIANGLE A scalene triangle has sides of unequal lengths, and all three of its angles are also different , .

Triangles

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