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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.
How do you find a segment bisector?
Adjust a compass so the distance between the point and the pencil is more than half of the length of the segment. With the point at one end of the segment draw an arc that intersects the segment. Without adjusting the compass, with the point at the other end of the segment draw an arc that intersects the first arc at two places. The line that includes those two intersecting points is the perpendicular bisector.
Is it possible to bisect any given angle using only a straightedge and a compas?
Yes Set the compass at a reasonable width. Put the point of the compass on the point of the angle. Draw an arc on each arm of the angle. With the point of the compass on where one arc intersects one arm of the angle, draw a further arc between the arms of the angle (roughly in the middle). With the point of the compass on the other arc-arm intersection, draw another arc to intersect this just drawn arc. With a straight edge join this intersection to the point of the angle - this line bisects the angle.
A line touching an arc or circle at only one point perpendicular to the arc's radius is said to be?
tangent
What is a 180 degree?
Taking a straight line/ Place a POINT on that straight line. Sweep an arc from one side of the point to the other side of the point. That arc is 180 degrees.
