Specifying three angles ,
,
and
does not uniquely define a triangle,
but any two triangles with the same angles
are similar. Specifying two angles
of a triangle automatically gives the third since the
sum of angles in a triangle
sums to
(
radians),
i.e.,
AAA Theorem
See also
AAS Theorem, ASA Theorem, ASS Theorem, SAS Theorem, SSS Theorem, TriangleExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "AAA Theorem." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/AAATheorem.html