triangle inequality

(redirected from Triangle postulate)

triangle inequality

[′trī‚aŋ·gəl ‚in·i′kwäl·ə·dē]
(mathematics)
For real or complex numbers or vectors in a normed space x and y, the absolute value or norm of x + y is less than or equal to the sum of the absolute values or norms of x and y.
References in periodicals archive ?
The Unique Triangles activity (see Appendix 3) was used to encourage a discovery approach to the congruent triangle postulates and theorems.

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