Angles and Secants P1.

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• Prenos dejavnosti (.zip)

• GeoGebra datoteke

  1. THEOREM: If two chords intersect in a circle, the product of the lengths of the segments of one chord equal the product of the segments of the other. (.ggb)
     
  2. THEOREM: The measure of an angle formed by two lines that intersect inside a circle is half the sum of the measures of the intercepted arcs. (.ggb)