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11111nata11111 [884]
4 years ago
5

Please help question in picture

Mathematics
1 answer:
DanielleElmas [232]4 years ago
3 0

Step-by-step explanation:

Scince 3 and 4 are forming a straight angle together which we knew it's equal to 180°

m<3 + m<4 = 180°

m<3 = 180°- m<4

m<3= 180°- 81=99°

The sum of triangle angle = 180

m<1 + m<2 + m<3 =180°

42° + m<2 + 99° = 180°

m<2 = 180° - 99° - 42°

m<2= 39°

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