Answer:
Triangle: 120
Quadrilateral: 90
Pentagon: 72
Octagon: 45
Decagon: 36
30-gon: 10
50-gon: 7.2
100-gon: 3.6
Step-by-step explanation:
360/n = the measure on the exterior angle
n = the number of sides
therws this random chart from the internet, I think that's what they want, but not sure
23 divided by X. X=half of 23. but really, you need to add to it. other than that i can't help ya, all i know is that half of 23 is 11.5