In a triangle <C and < D of triangle CDE are 32° and 48° what is the measure of third angle​

Does anyone know how to do geometryme with this problem

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Determine which postulate or theorem can be used to prove that lmn =nmo