A
straight
line
perpendicular
to
one
of
two
parallel
lines
is
____________________
to
the
other
also
Lines
perpendicular
to
non
-
parallel
lines
are
____________________
____________________
If
two
angles
have
their
sides
parallel
,
right
side
to
left
side
and
left
side
to
right
side
,
the
angles
are
____________________
If
two
angles
have
their
sides
perpendicular
,
right
side
to
right
side
and
left
side
to
left
side
,
the
angles
are
____________________
An
exterior
angle
of
a
triangle
is
(
greater
than
,
equal
to
,
less
than
)
the
sum
of
the
two
opposite
interior
angles
____________________
____________________
In
any
right
triangle
,
the
two
acute
angles
are
____________________
Each
angle
of
an
equilateral
triangle
is
____________________
If
two
parallel
lines
are
cut
by
a
transversal
,
the
sum
of
the
two
interior
angles
on
the
same
side
of
the
transversal
is
equal
to
____________________
____________________
____________________
The
sum
of
the
angles
of
a
triangle
is
____________________
____________________
____________________
If
two
angles
of
one
triangle
are
equal
respectively
to
two
angles
of
another
triangle
,
then
the
third
angle
of
the
of
the
first
triangle
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
