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An [[equilateral triangle]] has three equal sides, and three 60º angles.
An [[equilateral triangle]] has three equal sides, and three 60º angles.
If a triangle is not one of the above, it is a [[Scalene Triangle|scalene triangle]].
If a triangle is not one of the above, it is a '''scalene triangle''' -- that is, a triangle with no [[congruent]] angles.
An [[obtuse triangle]] has one angle that measures more than 90<sup>o</sup>.
An '''obtuse triangle''' has one angle that measures more than 90<sup>o</sup>.
==Congruence of triangles==
==Congruence of triangles==