from figure

m<4 is similar to m<2 that is 62o

m<4 = 62 degree

62 + 62 = 124 degree

circle of 360 degree

360 - 124 = 236 degree is reaming which is divide among m<1 and m<3

236/2=118 degree

so m<1 and m<3 is 118 degree.

m<1 118 , m<2 =62 , m<3 = 118 , m<4 = 62 degree , final answer.

Thank you.

best my answer.

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