triangle

US /ˈtraɪ.æŋ.ɡəl/
UK /ˈtraɪ.æŋ.ɡəl/
"triangle" picture
1.

a plane figure with three straight sides and three angles

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The architect used a triangle to measure the angles.
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She drew a perfect equilateral triangle.
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trigondelta
2.

a percussion instrument consisting of a steel rod bent into a triangle, open at one corner, and sounded by striking with a metal beater

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The musician played the triangle during the orchestral piece.
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The delicate sound of the triangle added sparkle to the melody.
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percussion instrument
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love trianglegolden triangle