Trigon used in a sentence

Trigon in a sentence as a noun

And if you have to scale back on something to make room, scale back on trigonometry. Discrete is a subset of math that was barely touched on in my school, and it was a massive culture-shock to get to college and never have seen many of the staple discrete problems.

This is the so-called "trigon" which was used to predict the location of Great Conjunctions over time. Each conjunction between Jupiter and Saturn occurs every 20 years and about 120 degrees separated in the sky, thereby forming a triangle.