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1b) Determine the measure of the unknown angle.

1b) Determine the measure of the unknown angle.
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5 votes
1b) Determine the measure of the unknown angle.

1b) Determine the measure of the unknown angle.-example-1
User Paxx
by
7.6k points

1 Answer

5 votes
the answer is 140°
working : 540° - 90° -90° -80°= 280°
280/2 =140°
User Andre Clements
by
8.4k points
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