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11 October, 12:56

How many triangles are formed by the diagonal from one vertex in quadrilateral, hexagon, octagon, and decagon?!

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  1. 11 October, 13:13
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    Quadrilateral: two (you can only trace one diagonal and it forms two triangles)

    Hexagon: four (you can trace thre diagonals and four triangles are formed)

    Octagon: six (you can trace five diagonals and six triangles are formed)

    Degagon: eight (you can trace seven diagonals and eight triangles are formed)

    It is always true that the number of triangles you can form from a vertex in a convex polygon is the number of sides minus 2.
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