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right-angled triangle
/ɹˈaɪtˈæŋɡəld tɹˈaɪæŋɡəl/
/ɹˈaɪtˈaŋɡəld tɹˈaɪaŋɡəl/
Right-angled triangle
01
a flat geometric shape consisting of three straight sides and one right angle
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British
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a flat geometric shape consisting of three straight sides and one right angle