extent, degree, law, formula, distance, limits, amount
程 centers on measurable extent: a degree, distance, or amount that defines limits. The senses of law and formula are natural extensions of a fixed standard or rule that sets boundaries.
程 combines 禾 (grain) with 呈, which likely contributes the sound and the idea of presenting or displaying. The original sense may relate to measuring grain, which extended to extent and standard.
Grain 禾 is presented 呈 for measurement. Picture a farmer showing a sample of grain to an official who uses it to set the standard amount for tax: that fixed extent is 程.
For テイ, imagine a tailor taking measurements with a tape: tape -> テイ, and the tailor uses it to check the extent of the cloth.
degree; amount; grade; standard; of the order of (following a number); about; approximately
I see; that's right; indeed
extent; degree; measure
to some extent; to a certain extent
to that degree; to that extent; that much
process; course; mechanism
schedule; program; programme; agenda
process; operation; stage of a process; progress of work
course; curriculum
very; greatly; much; to a large extent; quite
(not) so; (not) particularly; (not) very; (not) that much
range (of a rifle, missile, etc.)
equation; formula
far away; far off
journey; course; distance; march; flight; drive; leg (of a journey, relay race, etc.)
moderate
interval; step
official regulations; inner rules
moderate
itinerary; travel plans