Answer: The main difference between a Shakespearean sonnet and a Petrarchan sonnet is the way the poem's 14 lines are grouped. Rather than employ quatrains, the Petrarchan sonnet combines an octave (eight lines) with a sestet (six lines) so the answer is an octave & sestet. Hope this helps :)
I have 2 dark bay quarter horses and one does reining, roping and cattle and the other one does really anything like english, western pleasure and barrels etc.
