Segments and Circles
This applet is designed to give students an introduction to the properties of circle segments and lines.
What is the relationship between the radius and diameter? A line tangent to a circle touches the circle at exactly one point. What do you notice about a radius which has this same point as an endpoint? How can you use the Pythagorean Theorem to PROVE a line is tangent to a given circle? What do you notice about a segment drawn through the center of the circle and perpendicular to a chord? What does it do to the chord? What do you notice about the properties of two chords whose distance to the center of the circle are congruent?