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.
2
Q
Inscribed angle corollary #1
A
Two inscribed angles that intercept the same arc are congruent.
3
Q
Inscribed angle corollary #2
A
An angle inscribed in a semicircle is a right angle.
4
Q
Inscribed angle corollary #3
A
The opposite angle of a quadrilateral inscribed in a circle are supplementary.
5
Q
Tangent and chords theorem
A
The angle formed by a tangent and a chord is half the measure of the intercepted arc.