The sexagesimal system (base 60).
1 min = 5 degree
Decimal
45 degrees
The metric system.
The metric system.
The metric system
The metric system.
The metric system, based on the number 10.
Acute, right angle, obtuse and reflex.
The "latitude" of any place is the angle on the Earth's surface between that placeand the equator. That angle is the basic measurement, and the distance can becalculated from it.
Metric.
metric