Okay, so.. y'know those angle thingys? Like.. how they have a circle in the corner of let's say a triangle or a little square in the corner of it? What are those called and what's their degrees?

Answer:
im pretty sure it's called a right angle or right angle quadrant
Step-by-step explanation:
if it's a square in a corner of a triangle then it is a right angle and the degrees would be 90
correct me if i'm wrong
Hope this helps! :)