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18.
I'm assuming that you need to know the number of triangles so you can find the sum of the interior angles (since each triangle has 180˚, all you have to do is multiply). If I'm correct in my assumption about your reason, then just remember that you'll always subtract 2 from the number of sides before multiplying by 180.
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How many triangles does a undecagon have?
There are 9 triangles in an 11 sided shape
How many triangles does a nonagon have?
A nine sided shape has 7 triangles
How many triangles can you fit in a 12 sided shape?
1o triangles
How many triangles does a dodecon have?
A dodecagon is a 12 sided shape made from 10 triangles
How many triangles are there in a 6 sided shape?
how many triangles are in a eight sided figure
How many triangles does a undecagon have?
There are 9 triangles in an 11 sided shape
How many triangles does a nonagon have?
A nine sided shape has 7 triangles
How many triangles can you fit in a 12 sided shape?
1o triangles
How many triangles are in a fourteen sided shape?
#
How many triangles does a dodecon have?
A dodecagon is a 12 sided shape made from 10 triangles
How many triangles can you make in a 29 sided shape?
Originating from one vertex there are 27 triangles
How many triangles can you make in a 13 sided shape?
11
How many triangles are there in a 6 sided shape?
how many triangles are in a eight sided figure
How many triangles can you make out of a 26 sided shape?
8
What shape can you make with 2 small triangles?
the shape that can make two smaller triangles is parallelogram.
What do you call triangles that are the same size and shape?
congruent triangles
How many triangles make up the shape of a pyramid?
There are 4 triangles that make up a pyramid. 4 on the sides and on the bottom a square or rectangle.
