### Home > CC4 > Chapter 11 > Lesson 11.1.2 > Problem 11-17

11-17.

Jillian is trying to construct a square. She has started by constructing two perpendicular lines, as shown at right. If she wants each side of the square to have length

*k*, as shown at right, describe how she should finish her construction. Homework Help ✎

How can you use *k* and the axes to create this square?

Jillian should construct an arc centered at *P* with a radius *k* so that it intersects *n* and *m* each once (call these intersections *R* and *S*). She should then make two more circles with radius *k*, centered at *R* and *S*. The fourth vertex lies where these two circles intersect.