triangle

word

/ˈtɹaɪˌæŋɡəɫ/
TRY-ang-guhl
/tɹˈaɪæŋɡəl/
TRY-ang-guhl

Definition

A triangle is a flat shape with three straight sides and three angles. It is one of the basic shapes in geometry and is also the name of a musical instrument with three sides.

Usage & Nuances

Common in math (geometry: 'equilateral triangle', 'right triangle') and in music (the instrument). As a shape, always three sides. In music, refer to the percussion instrument; context makes the difference clear. Not to be confused with 'triangular' (adjective form).

Example Sentences

A triangle has three sides.

basic

The musical triangle makes a clear sound.

basic

Draw a big triangle on your paper.

basic

If you cut a square in half diagonally, you get two triangles.

natural

The roof of the house is shaped like a triangle.

natural

He played the triangle at the end of the song.

natural