Question

On question 11 , what does the box represent

Answer 1

The square symbol on the corner of an angle represents that the angle has a measure of 90º.

Since the angle labelled as 16x-6 and the angle of 90º are alternate interior angles for the parallel lines u and v, then their measures are the same. Then:

`16x-6=90`

Solve for x:

`\begin{gathered} \Rightarrow16x=90+6 \\ \Rightarrow16x=96 \\ \Rightarrow x=(96)/(16) \\ \Rightarrow x=6 \end{gathered}`

Therefore, the value of x is 6.