0-1: MathXL Arcs and Sectors 10.1.17
Find the measure of arc CD in Op.
T
121°
P
D
B
mCD
(Simplify your answer)

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.