Tag Archives: radius

Arc of a Circle

is a diameter of a circle of radius unit. is a chord perpendicular to that cuts at . If the arc is of the circumference of the circle, what is the length of the segment ? Source: NCTM Mathematics Teacher, … Continue reading

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Tangent Circles

Determine the sum of the radii of all circles that pass through the points and [at the same time] and are tangent to the -axis. Source: NCTM Mathematics Teacher, February 2006 SOLUTION Any center of the circles lie on the … Continue reading

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Radius in Circle

In circle , find if and . Source: NCTM Mathematics Teacher SOLUTION Quadrilateral is a rectangle In right triangle  Pythagorean theorem Radius because is a radius Answer:

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