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A minimum of 2 triangles are needed, but you can also make a rectangle with 3 or more triangles.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe question makes no sense because "rectangular" is an adjective. So is the question seeking the number of triangles in a rectangular pyramid, a rectangular dipyramid or some other shape?
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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
How many triangles does it take to make a decagon?
10 triangles
How many triangles would it take to make hexagon?
Six equilateral triangles.
How many triangles does it take to make a nonagon?
7
How many triangles does it take to make a undecagon?
Nine, as a n-gon can be cut in n-2 triangles.
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.
Can you make a trapezoid with triangles?
Yes, you can but it take 3 triangles.
How do you calcuate the diagonal of a rectangle?
Since a diagonal divides a rectangle into two triangles, this is actually a problem in trigonometery. Since a rectangle has right angles, the resulting triangles also have right angles, therefore you can apply the Pythagorean Theorem. Or, just take your ruler and measure the diagonal. That's the direct approach.
How many triangles does it take to make a rectangular prism?
4, one for each side face
How many triagles would it take to make a parallelogram?
It needs only 2 triangles to construct a parallelogram
What total angle measures always equal 360 degrees?
Circles measure 360 degreesAny quadrilateral as well.Try to picture this, if you take a rectangle, and make a diagonal line across it, you have two triangles. Triangles will ALWAYS measure up to 180 degrees, so since you have two, 180X2=360
How many triangle doese it take to make a rhombus?
2 triangles make up a rhombus which has 4 interior angles adding to 360 degrees and a triangles has 3 interior angles add up to 180 degrees. Therefore: 360/180 = 2 triangles
