None
It has 2 diagonals
It has 9 diagonals
No such thing as a four-sided triangle !
a triangle has 0 lines of symmetry.
9 diagonals
3
what is 3-D triangel called?
Just one.
Is the triangel kill alot of poeple?
It has 1,345,890 diagonals
no because an equalateral triangel is equal to all sides and an iscoselise trangel has only 2 equal sides.
three line of symmetry
just one
im not sure i just saw it on youtube but your able to do it im sure of it
A undecagon has 44 diagonals. A dodecagon has 54 diagonals. An octagon has 20 diagonals. A heptagon has 14 diagonals.
24 diagonals
It has 2 Diagonals!!!