Question

∆ABC and ∆FDE are congruent by the

criterion. (Use the three-letter abbreviation without spaces.)
The value of x is
, and the value of y is
.
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Answer 1

Two figures are said to be congruent when they have the same shape and size or if one object is a mirror image of the other object. The triangles ABC and DFE are congruent when they have equal lengths of the sides and angles should as well be equal with the two triangles.