Why this statement it incorrect "if i find something on the internet, that means it is for public use, and i can do anything i want with it"?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

The anwser cause i do not understand just plez

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.