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Based on the diagram below, what is the measure of arc DC?

28 degrees
68 degrees
108 degrees
112 degrees


Based On The Diagram Below What Is The Measure Of Arc DC 28 Degrees 68 Degrees 108 Degrees 112 Degrees class=

Sagot :

Answer:

108 °

Step-by-step explanation:

∠DOC = 180° - 112° = 68°

∠DOC = 1/2(arc AB + arc DC)

68 = 1/2(y + 80 + y)

68 = y + 40

y = 28

arc dc = 80 + 28 = 108 °