Circle Theorem 15

When two circles touch, (i) the line through their centre passes through their point of contact. (ii) The two centres and the point of contact are collinear. (iii) They share a common tangent at the point of contact.
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Doug Vass —

 
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Etiketter
circle  geometry  theorem 
Målgrupp (ålder)
15 – 18
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English (United Kingdom)
 
 
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