Eric....
on your web page, the link to Owens Corning ie; 3 tab shingles installation instructions there is this:
High Ridge Hip & Ridge and High Style
® Hip & Ridge available by region.
If cutting three tabs for Hip & Ridge shingles, adhere to the following
instructions.
Cut full three-tab shingles into three 12" x 12" (13-1/4" x 13-1/8" metric)
Hip & Ridge shingles. Start hips at the eave and work up to ridge. Apply
ridge only after hips have been applied, beginning on end of ridge opposite
prevailing wind direction. Leave 5" (5-5/8" metric) exposure per shingle for
Hip & Ridge application. Bend over the ridge; fasten on each side 5-5/8"
(6-1/4" metric) from exposed end, 1" up from the edge. Cover exposed nails with asphalt plastic cement.
Bold is mine.