Similar Triangles
SimilarTriangles
Two triangles are similar if their triples of vertex angles are the same.
See also
Directly Similar, Inversely Similar, Similar, SimilarityExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Similar Triangles." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SimilarTriangles.html