It is an acronym for the postulate "Side Angle Side". This is used to determine a triangle's congruency to other triangles. SAS is grouped often with SSS, AAS, and ASA (all "A"s are angle, all "S"s are side.)
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In geometry, SAS stands for "side-angle-side," which refers to a method of proving congruence between two triangles. It states that if two sides and the included angle of one triangle are congruent to the corresponding sides and angle of another triangle, then the two triangles are congruent.
It is a 'corner' of a polygon.
euclid
How about 'acute' angles which are greater than 0 but less than 90 degrees.
SAS (Side-Angle-Side) is a geometric term that describes if two triangles are congruent - whether it is a right triangle or not.
An SAS 99 is part of the auditing standards. It is one of the rules which requires auditors to look for any signs of fraud throughout the process and take action where needed.