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What is the Sentry Theorem?
Author:
Carmel Schettino
Topic:
Angles
,
Polygons
Justify why the sum the exterior angles of any polygon (just 5 sides here) is equal to 360)? Why might this be called the Sentry Theorem?
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The basics
If the angles subtended by the chords of a circle (or of congruent circles) at the centre (or centres) are equal, then the chords are equal,
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