by the formula of ---A*b
There are normally no parallelograms within an isosceles triangle unless you put them there yourself.
There is no simple formula and, in any case, the answer will depend on what information about the trapezoid is given.
An isosceles triangle can be divided into 4 smaller, identical isosceles triangles. Each of these can then be divided into 4, and each of them ... So, the answer to the question is infinitely many.
To find the circumradius of an isosceles triangle, the formula is:1/8[(a^2/h)+4h]in which h is the height of the triangle and a is the base of the triangle.
The are of any triangle is calculated by the formula: Area = 1/2 x Base x Height
Lengths of: equal side+equal side+base = perimeter
Use the distance formula to calculate the distances between the three vertices. If they are all different, the triangle is scalene, if only two are the same, the triangle is isosceles, and if they are all the same, the triangle is equilateral.
For all triangles: area = 1/2 * base * height
It depends on isosceles WHAT? There are isosceles triangles, isosceles trapezia, for example.
The hypotenuse of an isosceles right triangle is 13 centimeters long. How long are its sides?