Hello, blame_canada100!

Did you make a sketch?

How many points are there in a plane that are 4 cm from a given line

and also 5 cm from a given point on that line?

All points which are 4 cm from line are on a pair of lines

. . parallel to and 4 cm from line Code:

- - - - - - - - - - - - - -
:
4
:
---------------------------- L
:
4
:
- - - - - - - - - - - - - -

Given a point P on line L, there are **four** points

. . which are on the two lines and 5 cm from P. Code:

- - - - o - - - o - - - -
: \ /
4 5\ /5
: \ /
-------------*------------ L
: /P\
4 5/ \5
: / \
- - - - o - - - o - - - -