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  • 14-08-2017
  • Mathematics
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Banabanana
Banabanana Banabanana
  • 14-08-2017
The measure of the angle formed by 2 chords  that intersect inside the circle is 1/2 the sum of the chords' intercepted arcs. 

(120 + x)/2 = 105
120 + x = 105 * 2
120 + x = 210
x = 210 - 120
x = 90°
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