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How many triangles can make a hexagon?
4 triangles make 1 hexagon. (easy way to find out how many triangles there are in a polygon- take number of sides of the polygon, subtract 2 from it, that's your answer!)
Can 2 triangles make a square or a rectangle?
Yes, they can. To demonstrate this draw a square on a sheet of paper. Draw a line diagonally from one corner to the one opposite. Cut along this line and you will have two triangles. Take them apart; if you put them together again in the right way you will have a square. Put together in different ways you can make an isosceles triangle or an equilateral parallelogram. If you do the same thing beginning with a rectangle, you will be able to reassemble the triangles to form a rectangle, isosceles triangle or a (non-equilateral) parallelogram.
Why is a square a rectangle but a rectangle is not a square?
a rectangle doesn't have four equal sided measurements, which is the definition of a square. also it can take one or more squares to make a rectangle but u can't make a rectangle into a square.
How many triangles does a 20 sided polygon contain?
it would have 18 triangles because u take 2 away each time.
Is there a way to make a parallelogram using tangram pieces?
yes,take 2 big triangles.then,take 2 small triangles and a square. first on the right put a triangle facing like a hill.on the left do it the opposite way then put the square in the middle of the 2 triangles and take the 2 small triangles and put them in the middle 2
