| Frank Moore Colby, Talcott Williams - Education - 1922 - 1022 pages
...principal propositions of similarity THREE SIMILAR TETRAHEDHA. are: Two triangles are similar if they **have two angles of one equal to two angles of the other** respectively. Mutually equiangular triangles are similar. If two triangles have the sides of the THREE... | |
| University of Oxford - Universities and colleges - 1913 - 386 pages
...contained by those sides equal, the triangles are congruent. If two triangles have two angles of the **one equal to two angles of the other, each to each, and** also one side of the one equal to the corresponding side of the other, the triangles are congruent.... | |
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