1 Prisims Cylinders Surface Development J Byrne 2013

1 Prisims & Cylinders Surface Development J. Byrne 2013

2 J. Byrne 2013 Draw the surface development of a Rectangle shaped prism (Cuboide) with a base of 20 mm x 30 mm and a altitude or height of 120 mm 34 21 4 1 3 2 Label the corners on the plan and bring up the corners to the elevation. Draw height lines across the page and step of length of each side re-label each corner

3 J. Byrne 2013 Draw the surface development of a Hexagonal shaped vase with a side of 20 mm and a altitude or height of 120 mm First draw the plan and label the corners bring up the corners to the elevation and mark the height

4 J. Byrne 2013 Draw the development straight across from the elevation. We know the height is 120 mm and that each side is 20 mm so we step this distance off 6 times to find the length of the development. Redraw the hexagonal base for the bottom

5 J. Byrne 2013 Take a look at the drink can below What type of shape to you think we will get when we develop this surface. The top and base will be two circles. The side will be a long rectangle with the length being the same length as the circumference of the circle.

6 Draw the surface development of a cylindrical pillar with a radius of 25 mm and a altitude or height of 100 mm J. Byrne 2013 Lines are called generators First draw the plan and divide into 12 parts Label each of the points on the circumference. Bring up the points to the elevation and mark the height

7 J. Byrne 2013 Draw the development straight across from the elevation. Height is 100 mm The length of the rectangle is the circumference so set compass to distance between two points and step off 12 times. Draw 2 circles for the top and the base.