What is a mathematical word that means the same. It has 9 letters in it and has a R and a N in it

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Is this a polynomial function? i need to know asap

Prove that quadrilateral is a rhombus.