they use protractors to measure circles
To use a protractor for circles you find the middle of the circle and you then put the dot on the hole then you measure
With a ruler
They are circles. We measure circles in degrees.
Protractors have to be half- circles because they measure angles less than 360 degrees.
you use circles to make stuff round
They work with rods and they have to measure the diameter of tables sometime. If they're making round furniture of any type, of course they will use it.
Yes, two arcs with the same measure that are arcs of the same circle or congruent circles are congruent to each other. This means they have the same length and subtend the same angle at the center of their respective circles. Therefore, if the circles are congruent, the arcs will be identical in measure, regardless of the size of the circles.
A pair of compasses are use to construct circles and arcs of circles
The question is misguided. You do not use radius only on circles!
The name for the units scientists use for circles are degrees.
There is no definitive answer on how long circles have been in use. The moon and sun are both circles and they have existed since the beginning of time.
The tool used to measure circles is called a compass. A compass consists of two arms: one with a pointed end for the center of the circle and the other for drawing the arc. It allows users to define a circle's radius accurately. For measuring circumference, a flexible measuring tape or a caliper can be used.