You use protractors to measure angles. There is a ruler on the flat edge of most protractors, too. It's very handy!
Protractors
It depends on the type of protractor
usually they r semi-circular because mostly ques in exams are based on angles between 0 and 180 .But also there are 360 degree protractors but they r usually used by architectures.
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FullCircle Protractors HalfCircle Protractors Square Protractors Rectangular Protractors Military Protractors
You use protractors to measure angles. There is a ruler on the flat edge of most protractors, too. It's very handy!
Protractors have to be half- circles because they measure angles less than 360 degrees.
I'm not sure we should be doing your math homework for you, but if he divides up the protractors evenly among all five classes, he has 36 for four classes and 35 for the last one. 181 / 5 = 36.2
The scapular protractors are muscles that move the shoulder blades outward and forward. The main scapular protractors include the serratus anterior and the pectoralis minor. These muscles play an important role in stabilizing the scapula during arm movements.
Protractors
It depends on the type of protractor
Protractors are used to measure angles.
Tractors, Protractors
they use protractors to measure circles
They're called protractors.
Degrees, minutes and seconds.