Respuesta :

igoroleshko156

Step-by-step explanation:

Step 1:  Find the angle a

All triangles add up to 180 degrees

81 + 62 + a = 180

143 + a = 180

a = 180 - 143

a = 37

Answer:  Option A, 37

ItsDodo
the sum of angles of triangle is 180 so;
a = 180 - ( 62 + 81 ) = 37°

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