Hexagonal Pyramid cut at an angle #2 Drawing Abilities Teacher Hexagonal Pyramid cut at an angle #2 © J Lewis 2004

Orthographic Projection The Elevation of a hexagonal pyramid is given below The pyramid is cut by a plane at 60° and the upper section is removed Notice that this is similar to a previous problem but the cut is in a different plane Elevation © J Lewis 2004

Starting the End Elevation Draw the outline of the End Elevation and number the edges as shown © J Lewis 2004

Drawing the Plan View Draw vertical generators from the cut surface to allow the drawing of the Plan Notice that the Plan shows 3 sides while the Elevation only shows 2 sides © J Lewis 2004

Completing the Plan View Join the points as shown Plan view © J Lewis 2004

Completing the End Elevation Construct the lines 5–6, 4–1 and 3–2 on the End Elevation as shown, these are TRUE LENGTHS and come from the Plan View End Elevation © J Lewis 2004

Completing the End Elevation Join the points as shown End Elevation © J Lewis 2004

Drawing the True Shape The Datum Line is parallel to the cutting plane Construct generators at right angles to the Datum Line as shown Draw the True Lengths 5-6, 4-1, 3-2 as measured from the End Elevation in the last slide © J Lewis 2004

Drawing the True Shape Join the points as shown Viewed with the true shape at right angles to the direction of viewing © J Lewis 2004

Surface Development Mark the points shown on the Plan, on a True Length of side, and use these to construct the Surface Development © J Lewis 2004

Completed Drawing © J Lewis 2004