It depends on what information you have. You could use a ruler or tape measure. Or, if the information is given in the foorm of the coordinates of the end points you could find the length as follows: if the coordinates of the two end points are (a,b) and (c,d) then the length is sqrt[(a - c)2 + (b - d)2]
use a ruler to measure the sides then do length times width
If 2 sides are known then use Pythagoras' theorem to find the 3rd side of a right angle triangle.
Use Pythagoras's theorem.
You find the midpoint of a line segment by dividing its length by two. If you are given two sets of 'x' and 'y' coordinates as the endpoints of the segment on a graph, then you need to use the formula [X1 plus X2]/2, [Y1 plus Y2]/2 to find the coordinates of the midpoint.
Once you know the coordinates, you can use the distance formula to find the lengths of the sides, then using that, you can find the area.
If you know the length of the sides but not the diagonal, you can use the Pythagorean Theorem.
The distance formula providing you know the coordinates of its end points
It depends on what information you have. You could use a ruler or tape measure. Or, if the information is given in the foorm of the coordinates of the end points you could find the length as follows: if the coordinates of the two end points are (a,b) and (c,d) then the length is sqrt[(a - c)2 + (b - d)2]
If you have the length of two of the sides and one other angle you can use the law of sines.
use a ruler to measure the sides then do length times width
P = 8s where s is the length of a side.
Square the two sides then add them up and the square root of this sum gives the length of the hypotenuse
If 2 sides are known then use Pythagoras' theorem to find the 3rd side of a right angle triangle.
You use it in space to find the planets
To measure triangles. To find the length of a triangles side, when two sides are already given.
Use Pythagoras's theorem.