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Which formula would be used to find the measure of angle 1?


1/2(a° + b°).

1/2(a° – c°).

1/2(b° + c°).

1/2(a° – b°).

-Answer-
D. 1/2(a° – b°).

Which formula would be used to find the measure of angle 112a b 12a c 12b c 12a b AnswerD 12a b class=