cassie23558
cassie23558 cassie23558
  • 02-01-2020
  • Mathematics
contestada

Find X.
pls & thank you :)

Find X pls amp thank you class=

Respuesta :

roundadworthy
roundadworthy roundadworthy
  • 02-01-2020

Answer:

The correct answer is D. 69

Step-by-step explanation:

Let's recall that if an exterior angle has its vertex where two rays share an endpoint outside a circle, the measure of that exterior angle is found by dividing the difference between the measures of the intercepted arcs by two.

Therefore, we have:

x = (Measure of arch CD - Measure of arch BD)/2

Replacing with the real values:

x = (210 - 72)/2

x = 138/2 = 69°

The correct answer is D. 69

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