The sum of the measures of the angles in a figure having 9 sides is 20 degrees each angle.
A quadrilateral - if the sides are straight lines.
The figure which is always a rectangle is a SQUARE having four straight sides and four right angles.
It depends on what the measures relate to: lengths of sides, interior angles, exterior angles, ...
A figure with four equal sides and no right angles is a rhombus. A rhombus is comprised of two acute angles and two obtuse angles.
A four sided figure with four equal sides and no right angles is a diamond, or a rhombus. If it had four right angles, it would be a square.
The sum of the measures of the angles in a figure having 9 sides is 20 degrees each angle.
Exterior angles add up to 360 degrees Interior angles add up to 1620 degrees
If only two sides of one figure are congruent to two sides of another figure, you can say nothing about the opposite angles.
square
polygon
The figure is a Regular polygon.
It is called a Heptagon. The sum of the measures of the angles of a heptagon is 900 degrees. See the related link for more info on types of polygons.
A square...?
A quadrilateral - if the sides are straight lines.
it would be 1260.
A closed figure having three sides and three angles
A figure or polygon having nine sides and nine angles.