三角

さんかく

triangle, triangular

JLPT N2

Character Breakdown

Understanding 三角 (sān jiǎo)

The word 三角 literally means "three angles" and primarily refers to a triangle, a geometric figure with three corners or angles. It is commonly used in mathematics, architecture, and everyday language when describing shapes or relationships involving three points or parties.

Common Uses

  1. Geometric shape: 三角 is most often used to describe the triangle shape itself, as in 三角 (triangle).
  2. Mathematical concepts: It appears in terms like 三角 (trigonometric functions), which are fundamental in advanced math.
  3. Figurative use: 三角关系 (love triangle or complex three-party relationships) is a common phrase in social contexts.
  4. Tools: 三角 (set square) is a common measuring tool shaped like a right triangle.

Collocations and Patterns

  • 三角 (triangle shape): the basic geometric figure.
  • 三角 (trigonometric functions): math term.
  • 三角关系 (triangle relationship): often used figuratively for complicated interpersonal relationships.
  • 三角 (set square): a measuring tool.

Usage Notes

When using 三角, it is important to distinguish between the literal geometric meaning and the figurative social meaning. For example, 三角关系 often implies emotional complexity, unlike the neutral geometric term. Also, 三角 is often combined with other words to specify the context, such as 三角 for the shape or 三角 for math functions.

Avoid confusing 三角 with similar-sounding words or characters that do not relate to the concept of three angles or triangles.

Example Sentences

The three angles of this triangle are 30 degrees, 60 degrees, and 90 degrees

We studied the basic concepts of trigonometric functions in math class.

The roof of this building is designed as a unique triangle.

A love triangle can sometimes make people feel complicated and conflicted.

Please use a set square to measure the length of this line segment.