how many diagonals does a triangle have?
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Answer:
Shape Names
Number of Vertices Number of Diag.
Triangle 3 0
Quadrilateral 4 2
Pentagon 5 5
Hexagon 6 9
Septagon 7 14
Octagon 8 20
Nonagon 9 27
Decagon 10. 35
Answered by
8
Diagonals
DiagonalsTriangle 3. 0
0Quadrilateral 4 2
2Pentagon 5 5
5Hexagon 6 9
A triangle has no diagonals. A square has two diagonals of equal length, which intersect at the center of the square. The ratio of a diagonal to a side is. A regular pentagon has five diagonals all of the same length.
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