triangle

Pronunciation

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Noun

Singular triangle

Plural triangles

1. A shape that has three sides and three angles.
2. (music) An instrument that is made out of metal and is shaped like a triangle.

• 

  An equilateral triangle (all sides and angles are equal)

• 

  A right triangle (one angle measures 90°)

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  A scalene triangle (all 3 sides and angles are different)

• 

  A triangle (musical instrument)

Related words

• acute triangle
• Bermuda Triangle
• Devil's Triangle
• equilateral triangle
• isosceles triangle
• love triangle
• obtuse triangle
• right triangle
• scalene triangle

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