2007-04-06 12:38:20 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
u mean a quadrilateral ?? if thought
This article is about the geometric shape. For other uses, see Quadrilateral (disambiguation).
In geometry, a quadrilateral is a polygon with four sides and four vertices. Sometimes, the term quadrangle is used, for etymological symmetry with triangle, and sometimes tetragon for consistence with pentagon.
http://en.wikipedia.org/wiki/Quadrilateral
http://en.wikipedia.org/wiki/Surface_area
to get any quadrilateral area
u use Lebesgue measure
http://en.wikipedia.org/wiki/Lebesgue_measure
2007-04-06 13:10:45 · answer #1 · answered by M. Abuhelwa 5 · 0⤊ 0⤋
When you say it has 4 sides ... are you perhaps talking about a triangular pyramid as it has 4 faces. It has a triangle for the base and then 3 triangular sides?? Could you be looking for the surface area of that figure? If so, and all faces are congruent (the same) then the figure is a 'regular triangular pyramid'.
The formula for finding the surface area is:
Surface Area = [Base Area] +
1/2 à Perimeter à [Side Length]
If you happen to know the length and the height then it is
4(1/2 b*h)
2007-04-06 20:07:31 · answer #2 · answered by Critters 7 · 0⤊ 0⤋
By definition, a triangle has only three sides. Consequently, computation of the area of a non-exsistent figure is not possible.
BTW, this answer also applies to 5-sided quadrilaterals,
10-sided pentagons, and square circles.
2007-04-06 20:00:24 · answer #3 · answered by ironduke8159 7 · 1⤊ 0⤋
Do you mean a 3D shaped pyramid looking structure with 4 sides of triangles?
Add the area of each of four triangles, each dimention should be given in a question.
If triangles are equal in shape, just B*H/2*4=B*H*2(B=base,H=height)
2007-04-06 19:58:33 · answer #4 · answered by 3.141592653589793238462643383279 3 · 0⤊ 0⤋
a triangle is only to have 3 sides and 3 angles. if it has 4 sides, then it is a quadrilateral.
2007-04-06 19:45:07 · answer #5 · answered by cnuswte 4 · 0⤊ 0⤋
By definition, a triangle has 3 sides.
If you have four sides, you'll have 4 angles, not a triangle.
2007-04-06 19:46:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
A triangle has three sides.
2007-04-06 22:40:20 · answer #7 · answered by Anonymous · 0⤊ 0⤋
if it has 4 sides its not a triangle...
2007-04-06 21:04:13 · answer #8 · answered by Autumn 2 · 0⤊ 0⤋
if a figure has 4 sides and is not a square it is classified as a quadrilateral. You need to be more specific.
2007-04-06 19:45:07 · answer #9 · answered by Fred 2 · 0⤊ 0⤋
if it has four sides then how is it a triangle?
2007-04-06 19:43:54 · answer #10 · answered by Anonymous · 0⤊ 0⤋