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2. Gradian - Wikipedia

   en.wikipedia.org/wiki/Gradian

   9 / 10 ⁠ °. minutes of arc. 54′. In trigonometry, the gradian – also known as the gon (from Ancient Greek γωνία (gōnía) 'angle'), grad, or grade[1] – is a unit of measurement of an angle, defined as one-hundredth of the right angle; in other words, 100 gradians is equal to 90 degrees. [2][3][4] It is equivalent to ⁠ 1 400 ...

3. Grade (slope) - Wikipedia

   en.wikipedia.org/wiki/Grade_(slope)

   The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper degree of "tilt".

4. Geometric design of roads - Wikipedia

   en.wikipedia.org/wiki/Geometric_design_of_roads

   A geometric design saved on construction costs and improved visibility with the intention to reduce the likelihood of traffic incidents. The geometric design of roads is the branch of highway engineering concerned with the positioning of the physical elements of the roadway according to standards and constraints.

5. Geometry - Wikipedia

   en.wikipedia.org/wiki/Geometry

   v. t. e. Geometry (from Ancient Greek γεωμετρία (geōmetría) 'land measurement'; from γῆ (gê) 'earth, land' and μέτρον (métron) 'a measure') [1] is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures. [2] Geometry is, along with arithmetic, one of ...

6. Grading (earthworks) - Wikipedia

   en.wikipedia.org/wiki/Grading_(earthworks)

   Grading (earthworks) Section through railway track and foundation showing the sub-grade. Grading in civil engineering and landscape architectural construction is the work of ensuring a level base, or one with a specified slope, [1] for a construction work such as a foundation, the base course for a road or a railway, or landscape and garden ...

7. Six degrees of freedom - Wikipedia

   en.wikipedia.org/wiki/Six_degrees_of_freedom

   Mnemonics to remember angle names. The six degrees of freedom of a mobile unit are divided in two motional classes as described below. Translational envelopes: Moving forward and backward on the X-axis. (Surge) Moving left and right on the Y-axis. (Sway) Moving up and down on the Z-axis. (Heave) Rotational envelopes: Tilting side to side on the ...