1.

Anwer the following angle properties

Answer»

ANSWER:

a=40°

b=140°

Step-by-step EXPLANATION:

SUM of all outer area =360

then ,75+120+60+65+a=360

320+a=360

360-320=40=a

then a is 40

now a+b=180

40 +b=180

b=180-40=140

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