Free brainliest for... free?

Which statement is true 1.the pythagorean theorem can be used to find the missing side of any triangle 2.the pythagorean theorem can be used to find the missing side of any polygon 3. the pythagorean theorem can be used to find the missing side of any right triangle 4.the pythagorean theorem can be used to find the missing side of any isosceles triangle

If g^-1(x) is the inverse of g (x) which statement must be true

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