Vertices name in triangle A B C ​

What aspects of lines have to be diffrent

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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