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 $\displaystyle L$ are on a pair of lines
. . parallel to and 4 cm from line $\displaystyle L.$ Code:
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:
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 - - - -