Triangle

The pitch of a triangle seems indeterminate when played alone but, like a chameleon, it adapts to the primary tonality of its surroundings.

Mary

Musical geometry - its shape is its name. Made by bending a steel bar into an isosceles or quilateral triangle, leaving one corner open.

Mary

These triangles were also played to call workers in from the fields at meal times. These utilitarian triangles were called dinner bells.

Mary

is musical geometry its shape is its name and is made by bending a steel bar into an isosceles or equilateral triangle one corner left open

Mary