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 "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.
Acute, right angle, obtuse and reflex.
The metric system, based on the number 10.
The metric system is based on the number 10.
Metric.