OBJECTIVES
At the end of the lesson, the students are expected to:
a.Identify pairs of angles formed by parallel lines cut by
a transversal;
b.Name pairs of angles in the given figure; and
c.Describe the use of parallel lines in the real-life
situation.
PARALLEL LINES
CUT BY A
TRANSVERSAL
Parallel Lines are a set of lines
that are at the
same distance with
each other and do
not intersect.
Transversal Line
- a line that
intersect two or
more lines.
How
parallel
lines are used
in real-life?
Pedestrian Lane
Railroads
Stair railings
Athlete’s Track and Field
GENERALIZATION
If two parallel lines are cut by a
transversal, then the alternate interior
angles formed are congruent . When
two lines are cut by a transversal, the
pairs of angles on either side of the
transversal and outside the two lines
are called the alternate exterior angles .