The case of congruent triangles are usually in the application:-Prove: two triangles are equal, the two line segments being equal, two angleseach other; two straight lines at right angles; the two parallel lines; the three-point line; …-Feature: the length of the line segment; calculation of angle measurement; calculate the circumference; area; …-Compare: line segment length; comparison of angle; …Applicationpostulate2. The same case of the triangle
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