noun
Technical term in mathematics and engineering for the graphical representation of three-dimensional objects in two dimensions.
図形幾何学は、建築や機械設計で立体を平面に表すのに使われる。
Descriptive geometry is used in architecture and mechanical design to represent three-dimensional objects on a plane.
Compound of 図形 (figure, shape) and 幾何学 (geometry). The exact historical derivation is uncertain; the term is a modern technical coinage.