Sides of a polygon
square
4
Besides being the father of trigonometry, what else is he known for/considered as?
The greatest astronomical observer
If a vertex protrudes outside of a polygon, what is it considered?
Irregular polygon
Hexagon
6
What city and region was Hipparchus born in?
If a vertex caves into the polygon, what is it considered?
Irregular polygon
nonagon
9
How old was Hipparchus when he died?
Around 70 years old
If an angle is under 180 degrees, what is it considered?
Obtuse
decagon
10
What course needs extra studying of trigonometry?
Engineering
If an angle is exactly 180 degrees, what is it considered as?
straight
Tridecagon
13
Should professional hikers understand trigonometry?
Yes
Define "acute"
Less than 90 degrees