Question

I need help with number 4. This isn’t a test.

Answer 1

We are asked the following:

`JK\perp TV`

"JK" and "TV" are lines where "J", "K" are points in the line JK and "T", "V" are points in the line TV. The symbol:

`\perp`

Mean that the lines are perpendicular. Therefore, we need to construct lines JK and TV that are perpendicular to each other:

And thus we get the required lines.