Question

plz tell the answer of this question class 9 . plz tell ​

Answer 1

Answer:

angle a=130

angle b=50

Step-by-step explanation:

angle a+angle b=180

angle a=80-angle b

putting value in angle a + angle b = 180

Answer 2

Answer:

Step-by-step explanation:

angle A - angle B=80 (given) .......(1)

angle A + angle b = 180 (linear pair) .........(2)

add (1) & (2)

angle A  - angle B = 80

angle A + angle B = 180

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2(angle A)= 260

angle A = 260/2

angle A = 130 degrees

substitute value of angle A in (2)

130 + angle B = 180

=>angle B = 50 degrees

plz give brainliest