use a ruler or use the other two lines to help
(alternate answer) The length of 2 sides of a triangle is not enough information in itself to determine the length of the 3rd side. Imagine two wooden bars, such as rulers, that are attached at one end by a pin, that holds the end together but not at a fixed angle. As the angle changes, you will see that the distance between the other two ends, that are not attached to each other, also changes. It goes all the way to zero, if the two pieces of wood are on top of (or superimposed on) each other, and it also goes as high as the sum of the lengths of the two pieces, if they form a straight line (or 180o angle).
If the triangle is equilateral, you don't have a problem, but if not you have to measure the sides.
By rearranging Pythagoras' theorem from a2+b2 = c2 to c2-a2 = b2 whereas a and b are the sides of the triangle with c being its hypotenuse or longest side
depends on the needed measurement and type of triangle.
If it has an hypotenuse then it is a right angle triangle and if you know its angles then use trigonometry to find its other two sides.
Pythagoras' theorem
They are used to find the angle or side measurement of a right triangle. For example, if 2 sides of a right triangle have known values and an angle has a known measurement, you can find the third side by using sine, cosine or tangent.
If the triangle is equilateral, you don't have a problem, but if not you have to measure the sides.
# You could use the Pythagorean theorem (a2+b2=c2) if you have the measurements of the other two sides. # If the triangle is a right triangle, and you have either the measurement of one of the sides and the angle of one of the sides, then you can use sine, cosine, or tangent to find it. Other than that, I am not sure if it is mathematically possible.
By rearranging Pythagoras' theorem from a2+b2 = c2 to c2-a2 = b2 whereas a and b are the sides of the triangle with c being its hypotenuse or longest side
If it is a right triangle (one angle is exactly 90 degrees) it is much easier: use the Pythagorean Theorem. Pythagorean Theorem states that for right triangles: a2 + b2 = c2 Where a and b represent the length of the sides adjacent (next to) to the right angle, and c represents the length of the side opposite the triangle. Plug the two sides you do know into this equation to get the third. If it is an equilateral triangle, then all sides are the same by definition. If it is an isosceles triable, then remember that two sides are equal to each other. If it is none of these then I believe you need to provide more information in order to get help.
No.
There is insufficient data to determine the other sides.To complete a right triangle's measurements, you need more data. At the very least, you need the measure of an angle other than the right angle. The angle is critical because without it you cannot determine the third angle (by subtracting from 90--these plus the 90-degree right angle will then add up to 180 degrees as a triangle should), and you need those angles to figure out the exact shape of the triangle. In turn, these angles are used in trigonometry to help you find the remaining sides using the one known side as a basis.
A right angle triangle has 3 sides as does all other types of triangles.
add all of the sides together
12
depends on the needed measurement and type of triangle.
a triangle always has three sides