16)

In each of the following question, find the minimum number of triangles in the given figure.

17)

In each of the following question, find the minimum number of triangles in the given figure.

18)

In each of the following question, find the minimum number of triangles in the given figure.

19)

In each of the following question, find the minimum number of triangles in the given figure.

20)

In each of the following question, find the minimum number of triangles in the given figure.

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