Transcript Locus of One and Two Points

Think About It!!
Describe the locus of points a distance of
2 from a line segment of length 5.
Locus of 2 Parallel Lines and
Locus of 2 Intersecting Lines
Geometry
Unit 7, Day 4
Mr. Zampetti
Objective:
To learn how to find the locus of two
parallel lines
 To learn how to find the locus of two
intersecting lines

Locus Theorem 4:

The locus of points equidistant from two
parallel lines, l1 and l2 , is a line parallel to
both l1 and l2 and midway between them.
Practice:

During your morning jog, you run down an alley
between two buildings which are parallel to one
another and are 20 feet apart. Describe your path
through the alley so that you are always the same
distance from both buildings.

You run parallel to the buildings, 10 feet from
each.
More Practice:

http://www.regentsprep.org/Regents/ma
th/geometry/GL1/PracLoc4.htm
Locus Theorem 5:

The locus of points equidistant from two
intersecting lines, l1 and l2, is a pair of
bisectors that bisect the angles formed
by l1 and l2 .
Practice

http://www.regentsprep.org/Regents/ma
th/geometry/GL1/PracLoc5.htm
Homework

Work Packets:
Locus of 2
Parallel Lines,
Locus of 2
Intersecting Lines