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What is defined to be an arc that has an central angle with the measure of 180 degrees?
If the arc is circular, such a figure is a semicircle or half circle.
What is a radian i.e measures of circular arcs according to mathematics?
A radian measures the degree of the arc. For instance, π radians is 180°. Then, the arc with π radians measures 180°.
How can you draw an ellipse by arc of circle method when major axis 120mm and minor axis 80mm?
Circular segment
What is the radius of curvature?
The radius of curvature of a circle, or an arc of a circle is the same as the radius of the circle.For a curve (other than a circle) the radius of curvature at a given point is obtained by finding a circular arc that best fits the curve around that point. The radius of that arc is the radius of curvature for the curve at that point.The radius of curvature for a straight line is infinite.
What is Relation between the length of the circular arc and the radian measures of its central angle?
You can think of an arc as a fraction of the circumferance of a circle. Also, a complete circle is 2pi radians, so any central angle is THETA / 2pi of a complete circle. Multiply by the circumferance to get the length of the arc: THETA / 2pi * 2(pi)(r) = THETA * r or the length of the arc is simply the radius times the central angle in radians
