isosceles triangle
noun/aɪˌsɒsəliːz ˈtraɪæŋɡl/
/aɪˌsɑːsəliːz ˈtraɪæŋɡl/
(geometry)- a flat shape with two of its three straight sides the same length
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isosceles triangle
Definition of isosceles triangle noun from the Oxford Advanced Learner's Dictionary