isosceles triangle

noun
🔊/aɪˌsɒsəliːz ˈtraɪæŋɡl/
🔊/aɪˌsɑːsəliːz ˈtraɪæŋɡl/
(geometry几何)
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  1. a flat shape with two of its three straight sides the same length等腰三角形