Presentation on theme: "Aberdeen Grammar School True Shapes The Pyramid. True Shape This type of drawing is asked to be drawn as part of a cut, prism, pyramid, cylinder or cone."— Presentation transcript:
Aberdeen Grammar School True Shapes The Pyramid
True Shape This type of drawing is asked to be drawn as part of a cut, prism, pyramid, cylinder or cone. It shows the actual shape of a sloping surface. They can be quite confusing but are not as hard to produce as they look.
True Shape As there are other slides and presentations depicting how to draw cut prisms, pyramids, cylinders and cones we are not going to show you how to do these things in this slideshow. Instead we will focus on producing the true shapes.
True Shape - Pyramids Here we will draw the true shape of the sloping surface.
True Shape Draw 2 lines at 90° to the cut from the bottom and top of the cut.
True Shape This centre line must be parallel with the sloping face on the elevation. Add a centre line at 90° to these two lines. Draw this centre line clear of all the other views to make the true shape clearer.
True Shape Use a compass to transport the distances from the centre line to the corners. Distances from the centre line to corner 2 and corner 3 are the same so can be marked on at the same time. Number the corners to stop you getting confused
True Shape Now use a straight edge to join the dots
True Shape Here the true shape is shown more clearly.
PowerPoint Presentation produced by D McLaren, Robert Gordon’s College. 2003