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\n" ); document.write( "As I see from the series of your recent posts, there is a gap in your knowledge of properties circles, chords, tangents and secant lines.\r
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\n" ); document.write( "\n" ); document.write( "In this site, there is a good source to learn it. See the group of lessons\r
\n" ); document.write( "\n" ); document.write( " - A circle, its chords, tangent and secant lines - the major definitions \r
\n" ); document.write( "\n" ); document.write( " - The longer is the chord the larger its central angle is \r
\n" ); document.write( "\n" ); document.write( " - The chords of a circle and the radii perpendicular to the chords \r
\n" ); document.write( "\n" ); document.write( " - A tangent line to a circle is perpendicular to the radius drawn to the tangent point \r
\n" ); document.write( "\n" ); document.write( " - An inscribed angle in a circle \r
\n" ); document.write( "\n" ); document.write( " - Two parallel secants to a circle cut off congruent arcs \r
\n" ); document.write( "\n" ); document.write( " - The angle between two chords intersecting inside a circle \r
\n" ); document.write( "\n" ); document.write( " - The angle between two secants intersecting outside a circle \r
\n" ); document.write( "\n" ); document.write( " - The angle between a chord and a tangent line to a circle \r
\n" ); document.write( "\n" ); document.write( " - Tangent segments to a circle from a point outside the circle, \r
\n" ); document.write( "\n" ); document.write( " - The converse theorem on inscribed angles \r
\n" ); document.write( "\n" ); document.write( " - The parts of chords that intersect inside a circle \r
\n" ); document.write( "\n" ); document.write( " - Metric relations for secants intersecting outside a circle (*)\r
\n" ); document.write( "\n" ); document.write( " - Metric relations for a tangent and a secant lines released from a point outside a circle \r
\n" ); document.write( "\n" ); document.write( " - Quadrilateral inscribed in a circle\r
\n" ); document.write( "\n" ); document.write( " - Quadrilateral circumscribed about a circle\r
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\n" ); document.write( "\n" ); document.write( "As useful addition to the theory, you will find many solved problems for circles, their chords, secant and tangent lines
\n" ); document.write( "in the lessons \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on a radius and a tangent line to a circle \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on inscribed angles \r
\n" ); document.write( "\n" ); document.write( " - A property of the angles of a quadrilateral inscribed in a circle \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on chords that intersect within a circle \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on secants that intersect outside a circle (*) \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on a tangent and a secant lines released from a point outside a circle \r
\n" ); document.write( "\n" ); document.write( " - The radius of a circle inscribed into a right angled triangle \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on tangent lines released from a point outside a circle\r
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\n" ); document.write( "\n" ); document.write( "The most relevant lessons to your problem are marked (*) in the list.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook on Geometry\r
\n" ); document.write( "\n" ); document.write( " GEOMETRY - YOUR ONLINE TEXTBOOK \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Properties of circles, inscribed angles, chords, secants and tangents \".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in GEOMETRY
\n" ); document.write( "https://www.algebra.com/algebra/homework/Triangles/GEOMETRY-your-online-textbook.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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