The document contains geometric terms related to circles such as radius, diameter, chord, secant, tangent, arc, circle, semicircle, sector, and circumference. It also includes concepts of exterior, interior, concentric, and tangential lines in relation to circles. The document appears to be notes or terms for a lesson on circles and their geometric properties.

1. O
O
A
B
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2. ORadius Diámeter
Chord
Secant
Tangent
Exterior
O
A
BArc
Circle
Semicircle
Sector circular
Semicircumference
Exterior tangential
Interior tangential
Concentric
Exterior
Interior
Secant
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