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Definition of isosceles triangle noun from the Oxford Advanced Learner's Dictionary

isosceles triangle

noun

/aɪˌsɒsəliːz ˈtraɪæŋɡl/

/aɪˌsɑːsəliːz ˈtraɪæŋɡl/

(geometry)

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a flat shape with two of its three straight sides the same length

See isosceles triangle in the Oxford Advanced American Dictionary

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