ch 9 end chunk

Question 1

The measure of an angle formed by two chords that intersect inside a circle is equal to-

Answer 1

-half the sum of the measures of the intercepted arcs
(Basically average of the two arcs)

Question 2

The measure of an angle formed by two secants, two tangents, or a secant and a tangent drawn from a point outside a circle is equal to-

Answer 2

-half the difference of the measures of the intercepted arcs.
(Basically big arc - small arc divided by half equals angle)

Question 3

when two chords intersect inside a circle, the product of the two segments of one chord equals-

Answer 3

-the product of the segments of the other chord.

(Think colored CP times PD = AP times PB)

Question 4

When two secant segments are drawn to a circle from an external point, the product of one secant segment and its eternal segment equals-

Answer 4

-the product of the other secant segment and its external segment
(Outside times Whole = Outside times Whole)

Question 5

secant and secant external segment formula

Answer 5

EA times EB = EC times ED

Question 6

Tangent segment and secant segment

Answer 6

(EA)^2 = EC times ED

Question 7

Tangent seg and tangent seg

Answer 7

Ice cream cone; both sides are congruent

Question 8

When a secant segment and a tangent segment are drawn to a circle from an external point, the product of the secant segment and its external segment is equal to

Answer 8

-the square of the tangent segment

Question 9

When a secant segment and a tangent segment are drawn to a circle from an external point, the product of the secant segment and its external segment is equal to

Answer 9

-the square of the tangent segment

Question 10

When you know two arcs and you wanna find the angle that connects them, what do you do?

Answer 10

Average of the two arcs = angle

Question 11

When you have an outside angle from by secants, tangents, or both, what do you do in order to find the angle?

Answer 11

Big arc - small arc divided by half = angle