surface
surface
sides
sides
perimeter
perimeter
bases
bases
vertices
vertices
angles
angles
altitude
altitude
diagonal
diagonal
median
The line segment
connecting the midpoints of the nonparallel
sides
is
called the median.
median
The part of a plane
enclosed inside the
trapezoid is called
the surface.
The line segments
which
enclose
a
trapezoid are called
the sides.
The parallel sides of
the trapezoid are
called
its
bases.
The longest side is
called the major base
and the other is
called the minor base.
The total of the
lengths of all of the
sides of a trapezoid
is
called
the
perimeter.
Each part of the
plane enclosed between two consecutive sides of the
trapezoid is called
an angle.
The points where
two sides of a trapezoid meet are called
the vertices.
The
perpendicular
distance
between
the parallel sides of
a trapezoid is called
the altitude.
Each line segment
that joins opposite
vertices
of
a
trapezoid is called a
diagonal.