Which exercises/theory should I discuss on the board?

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Which exercises/theory should I discuss on the board?

What size is angle C?

A

∠C=360−82−60=218°

B

∠C=82+60=142°

C

∠C=180−82−60=38°

D

∠C=3(82+60)=37°

What size is angle G?

A

∠G=245°

B

∠G=115°

C

∠G=65°

D

∠G=57.5°