how to draw cam contour?

I have a cam contour,but I don't know how to draw it with autocad.Below is data
Base circle is diameter 100.0 mm
0-90 degree Dwell
90-140 degree Modified trapezoid (-4mm)
140-310 degree Dwell
310-360 degree Modified trapezoid (4mm)
Thank you!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.