trianglenoun [ C ]uk /ˈtraɪ.æŋ.ɡəl/ us /ˈtraɪ.æŋ.ɡəl/
- Draw a perpendicular from the vertex of the triangle to its base.
- A triangle is a shape with three sides.
- The cloth was decorated with triangles of different colours.
- We cut some triangles of cheese.
- To make a star, put two triangles together.
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