Answer :
Answer:
Step-by-step explanation:To find the measure of arc ADC, we need to add the measures of arcs AD and DC, then subtract it from the total degrees in a circle (which is 360°).
Given that the measure of arc AD is 50° and the measure of arc DC is 80°, we can find the measure of arc ADC:
\[ \text{Arc ADC} = \text{Arc AD} + \text{Arc DC} \]
\[ \text{Arc ADC} = 50^\circ + 80^\circ \]
\[ \text{Arc ADC} = 130^\circ \]
So, the measure of arc ADC is \(130^\circ\).
