PLEASE HELP
What is the length of the third side of the window frame below??

Can you draw an isosceles triangle with only one 80 degree angle?

Factor this polynomial completely x^2-64

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares