12-3 Flashcards

inscribed angles of circles

1
Q

Inscribed angle theorem

A

The measure of an inscribed angle is half the measure of the intercepted arc.

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2
Q

Inscribed angle corollary #1

A

Two inscribed angles that intercept the same arc are congruent.

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3
Q

Inscribed angle corollary #2

A

An angle inscribed in a semicircle is a right angle.

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4
Q

Inscribed angle corollary #3

A

The opposite angle of a quadrilateral inscribed in a circle are supplementary.

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5
Q

Tangent and chords theorem

A

The angle formed by a tangent and a chord is half the measure of the intercepted arc.

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