12-3

Question 1

Inscribed angle theorem

Answer 1

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

Question 2

Inscribed angle corollary #1

Answer 2

Two inscribed angles that intercept the same arc are congruent.

Question 3

Inscribed angle corollary #2

Answer 3

An angle inscribed in a semicircle is a right angle.

Question 4

Inscribed angle corollary #3

Answer 4

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

Question 5

Tangent and chords theorem

Answer 5

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