tri
an
gle
Plural
triangles
1
(geometry) a flat shape consisting of three straight sides and three angles
- The artist used a triangle shape to create a dynamic composition.
- In geometry class, they learned how to calculate the area of a triangle.
- The roof of the house formed a triangle at the top, providing stability.
- She folded the paper into a triangle for her origami project.
Synonyms:
2
a percussion instrument made from a metal rod bent into an open triangular shape
A triangle is a small, metal percussion instrument shaped like a triangle with an open corner. It is played by striking the metal frame with a metal beater. The triangle produces a clear, bright, and resonant sound with a shimmering quality. It is often used in orchestras, bands, and various musical genres to add a delicate, ringing tone and enhance rhythm. The sound of the triangle is distinctive and can be heard clearly even in larger ensembles.
3
a geometric instrument consisting of three straight sides and three angles, commonly used to draw or measure angles and straight lines accurately
A triangle is a tool with three straight sides and three angles, commonly used for drawing or measuring angles and straight lines accurately. These instruments, also known as set squares or drafting triangles, are often made of plastic or metal and are typically used in technical drawing, architecture, and engineering. The angles of the triangle are marked, allowing for precise measurements of right angles or other specific angles. Triangles are essential for tasks that require accurate alignment and angle construction.
- The carpenter used a drafting triangle to ensure the corners of the cabinet were perfectly square.
- She relied on a transparent triangle ruler to draw precise lines for the blueprint.
- The geometry teacher demonstrated how to use a protractor and triangle to measure angles in the classroom.
- The architect employed a large drafting triangle to sketch the floor plan of the house.
- The engineer utilized a steel triangle ruler to construct the framework for the bridge with precision.
Synonyms:
4
a small northern constellation located near Perseus, between Andromeda and Aries
Synonyms:
5
any object or figure roughly resembling the shape of a triangle