Question

Show by comparing angles and side which of the Triangles given here are congruent to each other (c)
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Answer 1

Two triangles are congruent if their corrosponding sides are equal in length and corrosponding angles are equal in measure.. in the given figure u see that

angle B=angle E=90 degree ,side AB=DE=2cm, side BC=EF=1cm , side AC=DF=2cm.. its mean triangle ABC is congruent to triangle DEF