Question

I have a question , can I get some help

Answer 1

Consider the the angles,

`\angle5\text{ and }\angle7`

Let the angles between the above angles be,

`\angle6\text{ }`

Then,

`\begin{gathered} \angle6+\angle7=180\text{ (linear pair)} \\ \angle5+\angle6=180(linear\text{ pair)} \end{gathered}`

Therefore,

`\angle6+\angle7=\angle5+\angle6`

So,

`\angle7=\angle5`