The highest vertex of a solid Apex The highest vertex of a solid
An flat surface of no thickness with infinite length and width Plane An flat surface of no thickness with infinite length and width
A line that generates a surface Generator A line that generates a surface
The path of a point under certain conditions Locus The path of a point under certain conditions
The true angle between two surfaces or planes Dihedral Angle The true angle between two surfaces or planes
Orthographic Projection An internationally recognised method of represent 3D objects using 2D drawings
A line representing where a plane meets the horizontal plane Horizontal Trace A line representing where a plane meets the horizontal plane
Lines which are not parallel and do not intersect even if extended Skew Lines Lines which are not parallel and do not intersect even if extended
A line representing where a plane meets the vertical plane Vertical Trace A line representing where a plane meets the vertical plane
A view of a shape when viewed perpendicular to the shape True Shape A view of a shape when viewed perpendicular to the shape
Where the horizontal plane and the vertical plane cross XY Line Where the horizontal plane and the vertical plane cross
The view projected onto the Vertical Plane Elevation The view projected onto the Vertical Plane
The view projected onto the Horizontal Plane
The view projected onto the End Vertical Plane End Elevation The view projected onto the End Vertical Plane
Rebatment The rotation of a plane or surface until it is coincident with another surface
Any part of the circumference of a circle Arc Any part of the circumference of a circle
Area The size of a surface measured by the amount of square metres it covers
Unfolding a 3D object onto a plane Development Unfolding a 3D object onto a plane
The longest axis through the centre of an ellipse Major Axis The longest axis through the centre of an ellipse
The shortest axis through the centre of an ellipse Minor Axis The shortest axis through the centre of an ellipse
A straight line that touches a curve at one point only Tangent A straight line that touches a curve at one point only (Point Of Contact)