Isosceles triangle - a triangle that has at least two congruent sides, Acute triangle - A triangle with no angle measuring 90 degrees or more., Acute angle - An angle with a measure less than 90 degrees, Obtuse triangle - A triangle whose largest angle measures greater than 90 degrees, scalene triangle - A triangle that has no congruent sides, Equilateral triangle - A triangle whose sides are all the same length, Right triangle - A triangle that has one 90 degree angle, Isosceles, Acute, and Scalene - Ways to classify a triangle by its sides, Acute, Right, Obtuse, Equilateral - Ways to classify a triangle by its angles.,

Triangle definitions for classifying by angles and classifying by sides

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