Write which congruence theorem is used and also write a congruency statement

SAS, Triangle ABC is congruent to triangle DEF.

Step-by-step explanation:

We name triangles with a triangle symbol and in alphabetical order. To write a statement, name each triangle and place a congruent sign between them.

To determine what postulate, look at the arrangement of congruent parts which is side-angle-side. This is SAS.

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Write Which congruence theorem is used and also write a congruency statement

SAS Triangle ABC is congruent to triangle DEF.

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6 equilateral triangles