maryam2863
22.10.2020 •
Mathematics
Please help me, i really don't know how to solve this question
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Ответ:
60 degrees
Step-by-step explanation:
40 degrees + 2y+20 degrees makes a straight angle. (from alternate interior angles postulate)
Thus, 2y+60 degrees = 180, or 2y = 120 degrees.
This means y = 60 degrees
Ответ:
(bc)^2 = (ac)^2 - (ab)^2 give me brainliest if its correct