a polygon
If it's a 3 dimensional shape then it is volume otherwise it is surface area
A construction. A contruction is a geometric drawing of a figure usually made by a compass and a straightedge.
A triangle is a geometric figure that is made of three line segments. It is a closed figure and has three angles.
Drawing is creating a figure without tools (i.e. a ruler, a compass, etc.) Constructing is creating a figure with tools.
a decagon
a ruler
The answer is Area. The answer is Area.
The measure of the amount of surface enclosed by the boundary of a figure is called its area. Area quantifies the two-dimensional space within the perimeter of a shape, such as a rectangle, circle, or triangle. It is typically expressed in square units, such as square meters or square feet.
isn't it called face?
That's the 'volume' of the figure.
-- The amount of paper you'd have if you cut the figure out. -- The amount of carpet you need to completely cover the figure.
If it's a 3 dimensional shape then it is volume otherwise it is surface area
a cone
circumscribed
Circumscribing.
A circle (2D) or a sphere (3D)
An acute triangle.