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Travka [436]
3 years ago
6

Find the size of each of the unknown angles. Help me plz​

Mathematics
1 answer:
saw5 [17]3 years ago
7 0

Answer:

2a+15 = 125(being alternate angle)

or,2a = 125-15

or,2a = 110

or,a = 110÷2

,a = 55

again,2a+15+b+30=180(Being co-interior angle)

or,2×55+15+b+30=180

or,110+15+30+b=180

or,155+b=180

or,b=180-155

Therfore,b=25

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