DHS Y13 TD Quiz 2 - Dihedral Angles

The Figure _____ given on the left depicts that of skew lines.

For the folded plates ABC and BCD, the first step towards finding the dihedral angle will be to:

• Find the true length line AB by projecting perpendiculars.

• Find the true length line BC by projecting perpendiculars.

• Find the true length line AC by projecting perpendiculars.

• Find the true length line CD by projecting perpendiculars.

After obtaining the first auxiliary view showing the true length of the line of intersection, the next step in order to determine the dihedral angle will be to:

• project the edge view of plane ABC.

• project the edge view of plane BCD.

• project the point view of the line of intersection

• project the true shape of the two planes.

The true shape of plane ABC can be projected perpendicularly from the:

• edge view ABC

• Plan view ABC

• Front view ABC

• 1st Auxiliary view of ABC

The Figure shows the line AB which is inclined to HP and parallel to VP. This is the _____________ trace of line AB.

A dihedral angle between two intersecting planes can only be measured on the view which shows

• the line of intersection as a true length.

• one of the planes as an edge view.

• the line of intersection as a point.

• the two planes as true shapes.