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Question

The minimum number of parameters required to prove similarity between two triangles is ____.



Your Answer
A

1

Correct Answer
B

2

Your Answer
C

3

Your Answer
D

4


Solution

The correct option is B

2


In two triangles, if two pair of corresponding angles are equal, then the third pair will also be equal (by using angle sum property of a triangle). Then, the triangles will be similar by AAA criterion.

Therefore, all we need to prove is that two pair of corresponding angles are equal and then the triangles will be similar (AA criterion).

Thus, we need only 2 parameters i.e. two pair of equal corresponding angles, to prove similarity between two triangles.

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