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General

Easy

Question

# What additional information is necessary to prove that the given triangles are congruent by AAS postulate?

Hint:

### A pair of vertically opposite angles are always equal to each other.

## The correct answer is: we need BAE = DCE

### In the figure, side BE = ED

Since a pair of vertically opposite angles are always equal to each other, it implies that

So, we have got a side and an angle. To prove the triangles are congruent by AAS congruency postulate we need one more angle such that the side BE is not included.

So, we need

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