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agasfer [191]
3 years ago
13

I need this by the end of the hour please help my Geometry brainliest plus 50 points...

Mathematics
2 answers:
Genrish500 [490]3 years ago
4 0
1=45
2=135
3=135
6=45
7=45
8=135
9=90
12=90
4 and 1 are opposite, and thus equal, angles.
7 and 5 are supplementary angles, and thus they add up to 180 degrees. To get 7, you subtract 135 degrees from 180.
9 and 10 are supplementary and equal since all four those angles are 90 degrees.
goldfiish [28.3K]3 years ago
3 0
Part b is 1: (4 and 1)
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