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Triangles - Equilateral, Isosceles and Scalene
Equilateral, Isosceles and Scalene. There are three special names given to triangles that tell how many sides (or angles) are equal. There can be 3, 2 or no equal sides/angles:
Triangle - Wikipedia
By lengths of sides. Triangles can be classified according to the lengths of their sides: An equilateral triangle has all sides the same length. An equilateral triangle is also a regular polygon with all angles measuring 60°.
Types of Triangles (solutions, examples, videos)
Types of Triangles - right triangles, acute triangles, obtuse triangles, oblique triangles, equilateral triangles, equiangular triangles, isosceles triangles and scalene triangles, examples and step by step solutions, how to solve problems involving angles and sides of triangles, examples with step by step solutions
Cool math .com - Types of Triangles
Definitions and formulas for triangles including right triangles, equilateral triangles, isosceles triangles, scalene triangles, obtuse triangles and acute triangles
Math Antics - Triangles - YouTube
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Triangle definition and properties - Math Open Reference
Classifying triangles The seven types of triangle can be classified two ways: by sides and by interior angles. For more on this see Classifying triangles. Constructing triangles