The highest vertex of a solid

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Presentation transcript:

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)