Question

How many non-overlapping triangles can we make in a polygon having n sides by joining the vertices​

Answer 1

here is ur answer mate

2 triangles

Answer 2

Let the polygon have n sides

Each interior Angle =40∘=40∘

Number of sides =360∘exteriorangle=360∘exteriorangle

exterior angle =180−140=180−140

=40=40

Number of sides =36040=36040=9=9

∴The polygon has 9 sides

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