An
angle
is
formed
by
two
____________________
.
In
an
angle
,
the
common
endpoint
is
called
a
____________________
.
In
angle
ABC
,
the
vertex
is
____________________
.
An
angle
is
named
using
____________________
letters
.
When
naming
an
angle
,
the
____________________
letter
is
always
the
vertex
.
An
angle
that
measures
less
than
90
is
a
(
n
)
____________________
angle
.
An
angle
that
measures
between
90
and
180
is
a
(
n
)
____________________
angle
.
An
angle
that
measures
exactly
180
is
a
(
n
)
____________________
angle
.
An
angle
that
measures
exactly
90
is
a
(
n
)
____________________
angle
.
