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What is the longest chord of the circle?
The longest chord possible in a circle is one that is from one point on the circumference to its opposite point i.e. a chord that bisects the circle. Or to put it simply one straight down the middle
What does middle point of anything called?
The midpoint.
A line segment that connects the center of a circle to a point on the circle?
what about such a line segment? the length of such a segment is called the radius. the area of the circle is pi*the length of this segment squared the circumference is 2*pi*the length of this segment
What term best describes the set of all points in a plane that are a certain distances from a single point?
The answer will depend on what the "certain distances" are for each point.
How many tangents can be drawn to a circle containing a point outside the circle?
Any tangent must contain a point outside the circle. So the answer to the question, as stated, is infinitely many. However, if the question was how many tangents to a circle can be drawn from a point outside the circle, the answer is two.
